/* ============================================================
   reca tech Academy — style.css
   Complete Production-Ready Design System
   ============================================================ */

/* ============================================================
   1. CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================================ */

[data-theme="dark"],
:root {
  /* ── Backgrounds ── */
  --bg-primary:    #0a0a0f;
  --bg-secondary:  #0f0f1a;
  --bg-card:       #13131f;
  --bg-glass:      rgba(255, 255, 255, 0.03);
  /* Aliases used by inner pages */
  --bg-base:       #0a0a0f;
  --bg-surface:    #0f0f1a;
  --bg-raised:     #13131f;
  --bg-card-hover: #1a1a2e;

  /* ── Borders ── */
  --border-color:        rgba(255, 255, 255, 0.08);
  --border-color-strong: rgba(255, 255, 255, 0.15);
  --border-focus:        rgba(0, 180, 255, 0.6);

  /* ── Text ── */
  --text-primary:   #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted:     #606070;

  /* ── Accent / Color aliases ── */
  --accent:              #00b4ff;
  --accent-glow:         rgba(0, 180, 255, 0.3);
  --accent-secondary:    #7b5ea7;
  --accent-success:      #00c896;
  --accent-warning:      #ffb347;
  --accent-danger:       #ff4d6d;
  /* Named color aliases used by inner pages */
  --color-accent:        #00b4ff;
  --color-primary:       #00b4ff;
  --color-primary-light: #33c6ff;
  --color-secondary:     #7b5ea7;
  --color-success:       #00c896;
  --color-warning:       #ffb347;

  /* ── Gradients ── */
  --gradient-1:       linear-gradient(135deg, #00b4ff, #7b5ea7);
  --gradient-2:       linear-gradient(135deg, #0a0a0f, #13131f);
  --gradient-accent:  linear-gradient(135deg, #00b4ff 0%, #7b5ea7 100%);
  --gradient-primary: linear-gradient(135deg, #00b4ff 0%, #7b5ea7 100%);

  /* ── Shadows ── */
  --shadow:        0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-sm:     0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-accent: 0 0 30px rgba(0, 180, 255, 0.2);
  --shadow-card:   0 8px 32px rgba(0, 0, 0, 0.4);

  /* ── Navbar ── */
  --navbar-bg: rgba(10, 10, 15, 0.92);
  --navbar-h:  72px;

  /* ── Radius ── */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --radius-full: 9999px;

  /* ── Transitions ── */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-spring: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ── Typography ── */
  --font-heading:  'Space Grotesk', sans-serif;
  --font-display:  'Space Grotesk', sans-serif;
  --font-body:     'Inter', sans-serif;
  --font-primary:  'Inter', sans-serif;

  /* Font sizes */
  --fs-xs:   0.75rem;    /* 12px */
  --fs-sm:   0.875rem;   /* 14px */
  --fs-base: 1rem;       /* 16px */
  --fs-md:   1.0625rem;  /* 17px */
  --fs-lg:   1.125rem;   /* 18px */
  --fs-xl:   1.25rem;    /* 20px */
  --fs-2xl:  1.5rem;     /* 24px */

  /* Font weights */
  --fw-regular:   400;
  --fw-medium:    500;
  --fw-semibold:  600;
  --fw-bold:      700;
  --fw-extrabold: 800;
  --fw-black:     900;

  /* Line heights */
  --lh-tight:   1.2;
  --lh-snug:    1.4;
  --lh-normal:  1.6;
  --lh-relaxed: 1.75;

  /* ── Layout ── */
  --container-max: 1200px;
  --container-pad: 1.5rem;

  /* ── Z-index ── */
  --z-sticky:  100;
  --z-fixed:   200;
  --z-modal:   300;
  --z-tooltip: 400;
  --z-toast:   500;

  /* ── Spacing scale (4px base) ── */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;
}

[data-theme="light"] {
  /* ── Backgrounds ── */
  --bg-primary:    #f8f9ff;
  --bg-secondary:  #ffffff;
  --bg-card:       #ffffff;
  --bg-glass:      rgba(255, 255, 255, 0.8);
  --bg-base:       #f8f9ff;
  --bg-surface:    #ffffff;
  --bg-raised:     #f0f2ff;
  --bg-card-hover: #f5f7ff;

  /* ── Borders ── */
  --border-color:        rgba(0, 0, 0, 0.08);
  --border-color-strong: rgba(0, 0, 0, 0.15);
  --border-focus:        rgba(0, 144, 204, 0.6);

  /* ── Text ── */
  --text-primary:   #0a0a1a;
  --text-secondary: #4a4a6a;
  --text-muted:     #8a8aaa;

  /* ── Accent / Color aliases ── */
  --accent:              #0090cc;
  --accent-glow:         rgba(0, 144, 204, 0.2);
  --accent-secondary:    #6b4fa0;
  --accent-success:      #00a87a;
  --accent-warning:      #e6962a;
  --accent-danger:       #e03258;
  --color-accent:        #0090cc;
  --color-primary:       #0090cc;
  --color-primary-light: #00aee8;
  --color-secondary:     #6b4fa0;
  --color-success:       #00a87a;
  --color-warning:       #e6962a;

  /* ── Gradients ── */
  --gradient-1:       linear-gradient(135deg, #0090cc, #6b4fa0);
  --gradient-2:       linear-gradient(135deg, #f8f9ff, #ffffff);
  --gradient-accent:  linear-gradient(135deg, #0090cc 0%, #6b4fa0 100%);
  --gradient-primary: linear-gradient(135deg, #0090cc 0%, #6b4fa0 100%);

  /* ── Shadows ── */
  --shadow:        0 20px 60px rgba(0, 0, 0, 0.1);
  --shadow-sm:     0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-accent: 0 0 30px rgba(0, 144, 204, 0.15);
  --shadow-card:   0 8px 32px rgba(0, 0, 0, 0.08);

  /* ── Navbar ── */
  --navbar-bg: rgba(248, 249, 255, 0.92);
}

/* ============================================================
   2. CSS RESET & BASE
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  tab-size: 4;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--text-primary);
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

::selection {
  background-color: var(--accent-glow);
  color: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   3. SCROLL PROGRESS BAR
   ============================================================ */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-1);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px var(--accent), 0 0 20px var(--accent-glow);
}

/* ============================================================
   4. UTILITY CLASSES
   ============================================================ */

.container,
.section__container,
.navbar__container,
.footer__container,
.courses-filters__container,
.courses-section__container,
.related-courses__container {
  max-width: var(--container-max, 1200px);
  margin-inline: auto;
  padding-inline: var(--container-pad, 1.5rem);
  width: 100%;
}

.text--gradient,
.text-gradient {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Reveal System */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal--up    { transform: translateY(40px); }
.reveal--left  { transform: translateX(-40px); }
.reveal--right { transform: translateX(40px); }
.reveal--scale { transform: scale(0.9); }

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }
.reveal--delay-5 { transition-delay: 0.5s; }
.reveal--delay-6 { transition-delay: 0.6s; }

/* ============================================================
   5. BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition:
    transform var(--transition-spring),
    box-shadow var(--transition-base),
    background var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.1);
  opacity: 0;
  transition: opacity var(--transition-fast);
  border-radius: inherit;
}

.btn:hover::after {
  opacity: 1;
}

.btn:active {
  transform: scale(0.97) !important;
}

/* Primary */
.btn--primary {
  background: var(--gradient-1);
  color: #fff;
  border-color: transparent;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
  color: #fff;
}

/* Glow */
.btn--glow {
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn--glow:hover {
  box-shadow: 0 0 40px var(--accent-glow), 0 8px 30px var(--accent-glow);
}

/* Secondary */
.btn--secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn--secondary:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

/* Ghost */
.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--accent);
  background: var(--bg-glass);
  transform: translateY(-2px);
}

/* Sizes */
.btn--sm {
  padding: 8px 18px;
  font-size: 0.8125rem;
}

.btn--lg {
  padding: 16px 40px;
  font-size: 1.0625rem;
}

/* PayPal */
.btn--paypal {
  background: #0070ba;
  color: #fff;
  width: 100%;
  justify-content: center;
  border-radius: var(--radius-md);
  padding: 14px 24px;
  font-size: 1rem;
  border: none;
  margin-top: var(--space-4);
}

.btn--paypal:hover {
  background: #005ea6;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 112, 186, 0.4);
}

/* Wishlist Button */
.btn--wishlist {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px 24px;
  border-radius: var(--radius-full);
  border: 2px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn--wishlist:hover {
  border-color: #ff4d6d;
  color: #ff4d6d;
  background: rgba(255, 77, 109, 0.08);
}

.btn--wishlist.wishlisted {
  border-color: #ff4d6d;
  color: #ff4d6d;
  background: rgba(255, 77, 109, 0.1);
}

.btn--wishlist.wishlisted i {
  font-weight: 900;
}

/* ============================================================
   6. NAVBAR
   ============================================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  z-index: 1000;
  background: var(--navbar-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition:
    background var(--transition-slow),
    box-shadow var(--transition-slow),
    border-color var(--transition-slow);
}

.navbar--scrolled {
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.4);
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

[data-theme="light"] .navbar--scrolled {
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.1);
}

.navbar__container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--text-primary);
  flex-shrink: 0;
}

.navbar__logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-spring);
}

.navbar__logo:hover .navbar__logo-icon {
  transform: rotate(15deg) scale(1.1);
}

.navbar__logo-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.navbar__logo-text strong {
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Nav */
.navbar__nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.navbar__list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.navbar__item {
  position: relative;
}

.navbar__link,
.nav-link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  position: relative;
}

.navbar__link::after,
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-1);
  border-radius: var(--radius-full);
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

.navbar__link:hover,
.nav-link:hover {
  color: var(--text-primary);
}

.navbar__link:hover::after,
.nav-link:hover::after {
  width: 80%;
}

.navbar__link.active,
.nav-link.active {
  color: var(--accent);
}

.navbar__link.active::after,
.nav-link.active::after {
  width: 80%;
}

/* Actions */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Theme Toggle */
.navbar__theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-glass);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.navbar__theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
  transform: scale(1.05);
}

.theme-toggle__sun,
.theme-toggle__moon {
  position: absolute;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

[data-theme="dark"] .theme-toggle__sun  { opacity: 1; transform: rotate(0deg); }
[data-theme="dark"] .theme-toggle__moon { opacity: 0; transform: rotate(90deg); }
[data-theme="light"] .theme-toggle__sun  { opacity: 0; transform: rotate(-90deg); }
[data-theme="light"] .theme-toggle__moon { opacity: 1; transform: rotate(0deg); }

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-glass);
  cursor: pointer;
  transition: all var(--transition-base);
}

.navbar__hamburger:hover {
  border-color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
}

.navbar__hamburger-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
  transform-origin: center;
}

/* Hamburger → X animation */
.navbar__hamburger.is-open .navbar__hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.navbar__hamburger.is-open .navbar__hamburger-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}
.navbar__hamburger.is-open .navbar__hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
@media (max-width: 768px) {
  .navbar__hamburger {
    display: flex;
  }

  .navbar__nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--navbar-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-4) var(--space-6) var(--space-6);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition:
      transform var(--transition-slow),
      opacity var(--transition-slow),
      visibility var(--transition-slow);
    z-index: 999;
  }

  .navbar__nav.nav-menu--open,
  .navbar__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .navbar__list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }

  .navbar__link,
  .nav-link {
    font-size: 1.0625rem;
    padding: var(--space-3) var(--space-2);
    width: 100%;
  }
}

/* ============================================================
   7. HERO SECTION
   ============================================================ */

.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-primary);
  padding-top: 72px;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* Floating geometric shapes */
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.hero-bg-shape {
  position: absolute;
  border-radius: var(--radius-full);
  opacity: 0.15;
  filter: blur(1px);
}

.hero-bg-shape--1 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  top: -100px;
  right: 10%;
  opacity: 0.12;
  animation: heroShapeFloat 8s ease-in-out infinite;
}

.hero-bg-shape--2 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--accent-secondary) 0%, transparent 70%);
  bottom: 10%;
  left: -50px;
  opacity: 0.1;
  animation: heroShapeFloat 10s ease-in-out infinite reverse;
}

.hero-bg-shape--3 {
  width: 200px;
  height: 200px;
  background: var(--gradient-1);
  top: 30%;
  left: 5%;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  opacity: 0.08;
  animation: rotate 20s linear infinite;
}

.hero-bg-shape--4 {
  width: 120px;
  height: 120px;
  background: var(--accent);
  top: 20%;
  right: 25%;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.hero-bg-shape--5 {
  width: 80px;
  height: 80px;
  background: var(--accent-secondary);
  bottom: 25%;
  right: 10%;
  border-radius: var(--radius-md);
  opacity: 0.12;
  animation: float 7s ease-in-out infinite 1s;
  transform: rotate(45deg);
}

.hero-bg-shape--6 {
  width: 60px;
  height: 60px;
  background: var(--accent);
  top: 60%;
  left: 20%;
  border-radius: 50%;
  opacity: 0.1;
  animation: float 9s ease-in-out infinite 0.5s;
}

.hero-bg-shape--orbit {
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  opacity: 0.2;
  animation: rotate 30s linear infinite;
}

.hero-bg-shape--orbit-1 {
  width: 600px;
  height: 600px;
  top: 50%;
  right: -200px;
  transform: translateY(-50%);
}

.hero-bg-shape--orbit-2 {
  width: 800px;
  height: 800px;
  top: 50%;
  right: -350px;
  transform: translateY(-50%);
  animation-direction: reverse;
  animation-duration: 40s;
}

/* Hero Container */
.hero__container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-6);
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  padding-block: var(--space-20);
}

/* Hero Content */
.hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
  width: fit-content;
  animation: fadeInDown 0.6s ease both;
}

.hero__badge i {
  font-size: 0.75rem;
}

.hero__headline {
  font-size: clamp(2.5rem, 5vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  animation: fadeInUp 0.7s ease 0.1s both;
}

.hero__headline--gradient {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 520px;
  animation: fadeInUp 0.7s ease 0.2s both;
}

.hero__cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  animation: fadeInUp 0.7s ease 0.3s both;
}

.hero__cta,
.hero__cta-secondary {
  font-size: 1rem;
}

/* Stats Strip */
.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
  animation: fadeInUp 0.7s ease 0.4s both;
  flex-wrap: wrap;
}

.hero__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero__stat-number {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero__stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border-color);
  flex-shrink: 0;
}

/* Hero Visual */
.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeInRight 0.8s ease 0.2s both;
}

/* Hero Code Card */
.hero__card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  width: 100%;
  max-width: 480px;
  animation: float 6s ease-in-out infinite;
  position: relative;
  z-index: 2;
}

.hero__card--glow {
  box-shadow: 0 0 60px var(--accent-glow), var(--shadow);
}

.hero__card-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.hero__card-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.hero__card-dot--red    { background: #ff5f57; }
.hero__card-dot--yellow { background: #febc2e; }
.hero__card-dot--green  { background: #28c840; }

.hero__card-filename {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'Courier New', monospace;
}

.hero__card-code {
  padding: var(--space-5);
  font-family: 'Courier New', 'Fira Code', monospace;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--text-secondary);
  white-space: pre;
  overflow-x: auto;
}

/* Syntax Highlighting */
.code-kw     { color: #c792ea; }
.code-fn     { color: #82aaff; }
.code-str    { color: #c3e88d; }
.code-num    { color: #f78c6c; }
.code-comment{ color: var(--text-muted); font-style: italic; }

/* Floating Badges */
.hero__badge-float {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
  z-index: 3;
}

.hero__badge-float--1 {
  top: -20px;
  right: -20px;
  color: #3776ab;
  animation: float 5s ease-in-out infinite 0.5s;
}

.hero__badge-float--2 {
  bottom: 40px;
  left: -30px;
  color: var(--accent-secondary);
  animation: float 6s ease-in-out infinite 1s;
}

.hero__badge-float--3 {
  bottom: -20px;
  right: 10%;
  color: var(--accent-success);
  animation: float 7s ease-in-out infinite 0.3s;
}

/* Scroll Indicator */
.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  font-size: 0.75rem;
  animation: fadeIn 1s ease 1s both;
  z-index: 2;
}

.hero__scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.hero__scroll-wheel {
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: var(--radius-full);
  animation: float 1.5s ease-in-out infinite;
}

/* ============================================================
   8. SECTION GLOBAL STYLES
   ============================================================ */

.section {
  padding-block: var(--space-24);
  position: relative;
}

.section__container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-16);
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: var(--space-16);
}

.section__tag {
  display: inline-block;
  padding: var(--space-1) var(--space-4);
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.section__title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.section__subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================================
   9. ABOUT SECTION
   ============================================================ */

.about {
  background: var(--bg-primary);
}

.about__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.about__text {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.about__text strong {
  color: var(--text-primary);
}

.about__mission-vision {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.about__mv-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.about__mv-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.about__mv-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: var(--space-3);
}

.about__mv-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.about__mv-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.about__values {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.about__value-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.about__value-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.about__value-tag i {
  color: var(--accent-success);
  font-size: 0.75rem;
}

/* Carousel */
.about__carousel-wrapper {
  position: relative;
}

.carousel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}

.carousel__track {
  position: relative;
  width: 100%;
  aspect-ratio: 3/2;
  overflow: hidden;
}

.carousel__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
  pointer-events: none;
}

.carousel__slide--active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.carousel__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-4) var(--space-5);
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
}

.carousel__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(10, 10, 15, 0.7);
  border: 1px solid var(--border-color);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-base);
  backdrop-filter: blur(8px);
}

.carousel__arrow:hover {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.carousel__arrow--prev { left: var(--space-3); }
.carousel__arrow--next { right: var(--space-3); }

.carousel__dots {
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-4);
  display: flex;
  gap: var(--space-2);
  z-index: 10;
}

.carousel__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  padding: 0;
}

.carousel__dot--active {
  background: var(--accent);
  width: 24px;
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px var(--accent-glow);
}

/* ============================================================
   10. FEATURES SECTION
   ============================================================ */

.features {
  background: var(--bg-secondary);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.features__card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition:
    transform var(--transition-spring),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

.features__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-1);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.features__card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 180, 255, 0.3);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), var(--shadow-accent);
}

.features__card:hover::before {
  transform: scaleX(1);
}

.features__card-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.features__card-icon--1 { background: linear-gradient(135deg, rgba(0, 180, 255, 0.2), rgba(0, 180, 255, 0.05)); color: #00b4ff; }
.features__card-icon--2 { background: linear-gradient(135deg, rgba(123, 94, 167, 0.2), rgba(123, 94, 167, 0.05)); color: #7b5ea7; }
.features__card-icon--3 { background: linear-gradient(135deg, rgba(0, 200, 150, 0.2), rgba(0, 200, 150, 0.05)); color: #00c896; }
.features__card-icon--4 { background: linear-gradient(135deg, rgba(255, 179, 71, 0.2), rgba(255, 179, 71, 0.05)); color: #ffb347; }

.features__card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.features__card-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.features__card-footer {
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-color);
}

.features__card-stat {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ============================================================
   11. PRICING SECTION
   ============================================================ */

.pricing {
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.pricing::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.3;
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  align-items: start;
  position: relative;
  z-index: 1;
}

.pricing__card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition:
    transform var(--transition-spring),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

.pricing__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: rgba(0, 180, 255, 0.2);
}

.pricing__card--featured {
  border-color: var(--accent);
  background: linear-gradient(160deg, rgba(0, 180, 255, 0.06) 0%, var(--bg-card) 60%);
  transform: scale(1.03);
  box-shadow: 0 0 40px var(--accent-glow), var(--shadow);
  z-index: 2;
}

.pricing__card--featured:hover {
  transform: scale(1.03) translateY(-6px);
  box-shadow: 0 0 60px var(--accent-glow), var(--shadow);
}

.pricing__badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: var(--space-1) var(--space-3);
  background: var(--gradient-1);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pricing__card-top {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pricing__icon {
  width: 52px;
  height: 52px;
  background: var(--accent-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent);
}

.pricing__plan-name {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.pricing__price {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.pricing__currency {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  align-self: flex-start;
  margin-top: 4px;
}

.pricing__amount {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.pricing__period {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-left: 2px;
}

.pricing__features-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.pricing__features-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.pricing__check {
  color: var(--accent-success);
  font-size: 0.75rem;
  margin-top: 3px;
  flex-shrink: 0;
}

.pricing__cta {
  width: 100%;
  text-align: center;
  border-radius: var(--radius-md);
}

/* ============================================================
   12. LEARNING PATHS SECTION
   ============================================================ */

.paths {
  background: var(--bg-secondary);
}

.paths__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.paths__card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  transition:
    transform var(--transition-spring),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.paths__card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 180, 255, 0.2);
  box-shadow: var(--shadow-card);
}

.paths__card--featured {
  border-color: var(--accent);
  background: linear-gradient(160deg, rgba(0, 180, 255, 0.05) 0%, var(--bg-card) 60%);
  box-shadow: 0 0 30px var(--accent-glow);
}

.paths__card-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.paths__card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.paths__card-icon--1 { background: linear-gradient(135deg, rgba(0, 180, 255, 0.2), rgba(0, 180, 255, 0.05)); color: #00b4ff; }
.paths__card-icon--2 { background: linear-gradient(135deg, rgba(123, 94, 167, 0.2), rgba(123, 94, 167, 0.05)); color: #7b5ea7; }
.paths__card-icon--3 { background: linear-gradient(135deg, rgba(0, 200, 150, 0.2), rgba(0, 200, 150, 0.05)); color: #00c896; }

.paths__card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.paths__card-duration {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.paths__card-duration i {
  color: var(--accent);
  margin-right: 4px;
}

/* Roadmap Steps */
.paths__roadmap {
  display: flex;
  flex-direction: column;
  gap: 0;
  flex: 1;
}

.paths__step {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding-block: var(--space-3);
}

.paths__step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-glow);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent);
  flex-shrink: 0;
}

.paths__step-content {
  flex: 1;
}

.paths__step-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.paths__step-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.paths__connector {
  width: 2px;
  height: 20px;
  background: var(--border-color);
  margin-left: 17px;
  border-radius: var(--radius-full);
}

.paths__card-cta {
  width: 100%;
  text-align: center;
}

/* ============================================================
   13. TESTIMONIALS SECTION
   ============================================================ */

.testimonials {
  background: var(--bg-primary);
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.testimonial__card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition:
    transform var(--transition-spring),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.testimonial__card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 180, 255, 0.2);
  box-shadow: var(--shadow-card);
}

.testimonial__card--featured {
  border-color: var(--accent);
  background: linear-gradient(160deg, rgba(0, 180, 255, 0.05) 0%, var(--bg-glass) 60%);
  box-shadow: 0 0 30px var(--accent-glow);
}

.testimonial__quote-icon {
  color: var(--accent);
  opacity: 0.6;
  flex-shrink: 0;
}

.testimonial__quote {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.8;
  flex: 1;
  font-style: italic;
}

.testimonial__stars {
  color: #fbbf24;
  font-size: 1.0625rem;
  letter-spacing: 2px;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

.testimonial__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--accent);
  flex-shrink: 0;
}

.testimonial__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testimonial__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
}

.testimonial__role {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ============================================================
   14. CONTACT SECTION
   ============================================================ */

.contact {
  background: var(--bg-secondary);
}

.contact__container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-16);
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact__text {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact__detail-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.contact__detail-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-glow);
  border: 1px solid rgba(0, 180, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  color: var(--accent);
  flex-shrink: 0;
}

.contact__detail-item strong {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.contact__detail-item span {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Contact Form */
.contact__form-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form__label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font-heading);
}

.form__input-wrapper {
  position: relative;
}

.form__input-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
  pointer-events: none;
}

.form__input-icon--textarea {
  top: 16px;
  transform: none;
}

.form__input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9375rem;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base);
  outline: none;
  appearance: none;
}

.form__input::placeholder {
  color: var(--text-muted);
}

.form__input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--bg-card);
}

.form__input:focus + .form__input-icon,
.form__group:focus-within .form__input-icon {
  color: var(--accent);
}

.form__input--textarea {
  resize: vertical;
  min-height: 140px;
  padding-top: 14px;
  line-height: 1.6;
}

.form__error {
  font-size: 0.8125rem;
  color: var(--accent-danger);
  display: none;
  align-items: center;
  gap: 4px;
}

.form__error:not(:empty) {
  display: flex;
}

.contact__submit {
  width: 100%;
  padding: 16px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.contact__form-success {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: rgba(0, 200, 150, 0.1);
  border: 1px solid rgba(0, 200, 150, 0.3);
  border-radius: var(--radius-md);
  color: var(--accent-success);
  font-size: 0.9375rem;
  font-weight: 600;
  animation: fadeInUp 0.4s ease;
}

/* ============================================================
   15. FOOTER
   ============================================================ */

.footer {
  background: #06060e;
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-16);
}

[data-theme="light"] .footer {
  background: #f0f1f8;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-12);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__logo {
  color: var(--text-primary);
  text-decoration: none;
}

.footer__brand-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 300px;
}

.footer__socials {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.footer__social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition-base);
}

.footer__social-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px var(--accent-glow);
}

.footer__nav-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
  font-family: var(--font-heading);
  letter-spacing: -0.01em;
}

.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__nav-link {
  font-size: 0.9375rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.footer__nav-link:hover {
  color: var(--accent);
  transform: translateX(4px);
}

.footer__divider {
  height: 1px;
  background: var(--border-color);
  margin-bottom: var(--space-6);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copyright,
.footer__made-with {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer__heart {
  color: #ff4d6d;
  display: inline-block;
  animation: glowPulse 2s ease-in-out infinite;
}

/* ============================================================
   16. BACK TO TOP
   ============================================================ */

.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-1);
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 500;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

/* ============================================================
   17. PAGE HERO BANNER (courses.html & course-detail.html)
   ============================================================ */

.page-hero {
  position: relative;
  background: var(--bg-secondary);
  padding-top: calc(72px + var(--space-12));
  padding-bottom: var(--space-12);
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 0% 100%, rgba(0, 180, 255, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 100% 0%, rgba(123, 94, 167, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero__container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-6);
  position: relative;
  z-index: 1;
}

.page-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  font-size: 0.875rem;
}

.page-hero__breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: color var(--transition-fast);
}

.page-hero__breadcrumb a:hover {
  color: var(--accent);
}

.page-hero__breadcrumb-sep {
  color: var(--text-muted);
  font-size: 0.6875rem;
}

.page-hero__breadcrumb-current {
  color: var(--text-secondary);
  font-weight: 500;
}

.page-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}

.page-hero__title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.page-hero__subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 640px;
  margin-bottom: var(--space-8);
}

.page-hero__stats {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  flex-wrap: wrap;
}

.page-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-hero__stat-value {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.page-hero__stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================================
   18. FILTER BAR (courses.html)
   ============================================================ */

.courses-filters {
  position: sticky;
  top: 72px;
  z-index: 100;
  background: var(--navbar-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding-block: var(--space-4);
}

.courses-filters__container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.courses-filters__row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.courses-filters__row--top {
  gap: var(--space-3);
}

/* Search Box */
.search-box {
  position: relative;
  flex: 1;
  min-width: 200px;
  max-width: 360px;
}

.search-box__icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.875rem;
  pointer-events: none;
  transition: color var(--transition-fast);
}

.search-box:focus-within .search-box__icon {
  color: var(--accent);
}

#course-search {
  width: 100%;
  padding: 10px 16px 10px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: all var(--transition-base);
}

#course-search::placeholder {
  color: var(--text-muted);
}

#course-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Filter Selects */
.filter-selects {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.filter-select-wrapper {
  position: relative;
}

.filter-select-wrapper i {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.75rem;
  pointer-events: none;
}

#difficulty-filter,
#sort-filter {
  padding: 10px 36px 10px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: all var(--transition-base);
  font-family: var(--font-body);
}

#difficulty-filter:focus,
#sort-filter:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

#difficulty-filter option,
#sort-filter option {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* Results Count */
.results-count {
  font-size: 0.875rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.results-count strong {
  color: var(--accent);
  font-weight: 700;
}

/* Filter Pills */
.filter-pills {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-heading);
  white-space: nowrap;
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.filter-btn.active {
  background: var(--gradient-1);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 16px var(--accent-glow);
}

/* ============================================================
   19. COURSES GRID
   ============================================================ */

.courses-section {
  background: var(--bg-primary);
  padding-block: var(--space-12);
}

.courses-section__container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* Course Card */
.course-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    transform var(--transition-spring),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  position: relative;
}

.course-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 180, 255, 0.3);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), var(--shadow-accent);
}

.course-card.hidden {
  display: none;
}

/* Thumbnail */
.course-card__thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.course-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.course-card:hover .course-card__thumb img {
  transform: scale(1.08);
}

.course-card__thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.6) 100%);
}

/* Badge */
.course-card__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  backdrop-filter: blur(8px);
}

.course-card__badge--beginner {
  background: rgba(0, 200, 150, 0.9);
  color: #fff;
}

.course-card__badge--intermediate {
  background: rgba(255, 179, 71, 0.9);
  color: #fff;
}

.course-card__badge--advanced {
  background: rgba(255, 77, 109, 0.9);
  color: #fff;
}

/* Wishlist */
.course-card__wishlist {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(10, 10, 15, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: all var(--transition-base);
  backdrop-filter: blur(8px);
}

.course-card__wishlist:hover,
.course-card__wishlist.wishlisted {
  background: rgba(255, 77, 109, 0.9);
  border-color: #ff4d6d;
  color: #fff;
  transform: scale(1.1);
}

/* Card Body */
.course-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.course-card__category {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.course-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-card__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.course-card__instructor {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.course-card__avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  font-family: var(--font-heading);
}

.course-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.course-card__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.course-card__meta-item i {
  color: var(--accent);
  font-size: 0.75rem;
}

.course-card__rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8125rem;
}

.course-card__stars {
  color: #fbbf24;
  font-size: 0.75rem;
}

.course-card__rating-val {
  font-weight: 700;
  color: var(--text-primary);
}

.course-card__rating-count {
  color: var(--text-muted);
}

/* Card Footer */
.course-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  gap: var(--space-3);
}

.course-card__price {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.course-card__price-val {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent);
}

.course-card__footer .btn {
  padding: 8px 20px;
  font-size: 0.8125rem;
  border-radius: var(--radius-md);
  white-space: nowrap;
}

/* No Results */
.no-results {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-24) var(--space-6);
  gap: var(--space-4);
}

.no-results.visible {
  display: flex;
}

.no-results__icon {
  font-size: 4rem;
  color: var(--text-muted);
  opacity: 0.5;
}

.no-results__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.no-results__text {
  color: var(--text-secondary);
  max-width: 400px;
}

.no-results__reset {
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  background: none;
  border: none;
  font-size: 0.9375rem;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding-top: var(--space-8);
}

.pagination__btn {
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  font-family: var(--font-heading);
}

.pagination__btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.pagination__btn.active {
  background: var(--gradient-1);
  border-color: transparent;
  color: #fff;
}

.pagination__btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.pagination__dots {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding-inline: var(--space-1);
}

/* ============================================================
   20. COURSE HERO BANNER (course-detail.html)
   ============================================================ */

.course-hero {
  padding-top: 72px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.course-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 0% 100%, rgba(0, 180, 255, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 100% 0%, rgba(123, 94, 167, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.course-hero__container {
  max-width: 1200px;
  margin-inline: auto;
  padding: var(--space-12) var(--space-6);
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-12);
  align-items: start;
  position: relative;
  z-index: 1;
}

.course-hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.course-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.course-hero__breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.course-hero__breadcrumb a:hover {
  color: var(--accent);
}

.course-hero__breadcrumb-sep {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

.course-hero__breadcrumb-current {
  color: var(--text-secondary);
  font-weight: 500;
}

.course-hero__category {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  background: var(--accent-glow);
  border: 1px solid rgba(0, 180, 255, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  width: fit-content;
}

.course-hero__title {
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.course-hero__subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.course-hero__rating-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.course-hero__stars {
  color: #fbbf24;
  font-size: 1rem;
  letter-spacing: 2px;
}

.course-hero__rating-val {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1rem;
}

.course-hero__rating-count {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.course-hero__enrolled {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.course-hero__enrolled i {
  color: var(--accent);
}

.course-hero__instructor-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.course-hero__inst-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  border: 2px solid var(--accent);
}

.course-hero__inst-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.course-hero__inst-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.course-hero__inst-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--accent);
}

.course-hero__meta {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.course-hero__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.course-hero__meta-item i {
  color: var(--accent);
  font-size: 0.8125rem;
}

.course-hero__tags {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.course-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 5px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.course-hero__tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.course-hero__cta-group {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ============================================================
   21. COURSE PREVIEW CARD (sidebar)
   ============================================================ */

.course-preview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  position: sticky;
  top: 84px;
}

.course-preview-card__thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  cursor: pointer;
}

.course-preview-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.course-preview-card__thumb:hover img {
  transform: scale(1.05);
}

.course-preview-card__play {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  background: rgba(0, 0, 0, 0.4);
  transition: background var(--transition-base);
}

.course-preview-card__thumb:hover .course-preview-card__play {
  background: rgba(0, 0, 0, 0.55);
}

.course-preview-card__play-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #fff;
  box-shadow: 0 0 30px var(--accent-glow);
  transition: transform var(--transition-spring);
}

.course-preview-card__thumb:hover .course-preview-card__play-btn {
  transform: scale(1.1);
}

.course-preview-card__play-label {
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}

.course-preview-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.course-preview-card__price-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}

.course-preview-card__price {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.course-preview-card__original {
  font-size: 1rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.course-preview-card__discount {
  padding: 3px 10px;
  background: rgba(0, 200, 150, 0.15);
  color: var(--accent-success);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
}

.course-preview-card__enroll {
  display: block;
  width: 100%;
  padding: 14px;
  text-align: center;
  border-radius: var(--radius-md);
  font-size: 1rem;
}

.course-preview-card__includes {
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

.course-preview-card__includes-title {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
}

.course-preview-card__includes-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.course-preview-card__includes-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.course-preview-card__includes-item i {
  width: 16px;
  color: var(--accent);
  font-size: 0.8125rem;
  text-align: center;
}

.course-preview-card__share {
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

.course-preview-card__share-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}

.course-preview-card__share-btns {
  display: flex;
  gap: var(--space-3);
}

.share-btn {
  flex: 1;
  padding: 8px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: all var(--transition-base);
  text-decoration: none;
}

.share-btn:hover {
  transform: translateY(-2px);
}

.share-btn--twitter:hover  { background: rgba(29, 161, 242, 0.1); border-color: #1da1f2; color: #1da1f2; }
.share-btn--linkedin:hover { background: rgba(0, 119, 181, 0.1);  border-color: #0077b5; color: #0077b5; }
.share-btn--copy:hover     { background: var(--accent-glow);      border-color: var(--accent); color: var(--accent); }

.course-preview-card__guarantee {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: rgba(0, 200, 150, 0.07);
  border: 1px solid rgba(0, 200, 150, 0.2);
  border-radius: var(--radius-md);
}

.course-preview-card__guarantee i {
  font-size: 1.5rem;
  color: var(--accent-success);
  flex-shrink: 0;
}

.course-preview-card__guarantee-text {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.course-preview-card__guarantee-text strong {
  color: var(--text-primary);
  font-weight: 700;
}

/* ============================================================
   22. COURSE BODY (course-detail.html)
   ============================================================ */

.course-body {
  background: var(--bg-primary);
  padding-block: var(--space-12);
}

.course-body__container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-12);
  align-items: start;
}

.course-body__main {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  min-width: 0;
}

.course-body__sidebar {
  position: sticky;
  top: 84px;
}

/* Detail Cards */
.detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.detail-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-color);
}

.detail-card__title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.detail-card__title i {
  color: var(--accent);
  font-size: 1rem;
}

.detail-card__body {
  padding: var(--space-6);
}

/* Learn Grid */
.learn-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.learn-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.learn-item:hover {
  background: var(--bg-glass);
}

.learn-item__icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.learn-item__icon i {
  font-size: 0.75rem;
  color: var(--accent);
}

/* Requirements List */
.requirements-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
}

.requirements-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  padding-left: var(--space-4);
  position: relative;
}

.requirements-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* Curriculum Accordion */
.curriculum__summary {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.curriculum__summary span {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.curriculum__summary i {
  color: var(--accent);
  font-size: 0.8125rem;
}

.accordion {
  display: flex;
  flex-direction: column;
}

.accordion__item {
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-base);
}

.accordion__item:last-child {
  border-bottom: none;
}

.accordion__item.open {
  background: var(--bg-secondary);
}

.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  background: none;
  border: none;
  text-align: left;
  transition: background var(--transition-fast);
  gap: var(--space-4);
}

.accordion__trigger:hover {
  background: var(--bg-secondary);
}

.accordion__item.open .accordion__trigger {
  background: var(--bg-secondary);
}

.accordion__trigger-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  min-width: 0;
}

.accordion__section-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-glow);
  border: 2px solid rgba(0, 180, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
  transition: background var(--transition-base), border-color var(--transition-base);
}

.accordion__item.open .accordion__section-num {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.accordion__trigger-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.accordion__trigger-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.accordion__trigger-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.accordion__trigger-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.accordion__duration-badge {
  padding: 4px 10px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.accordion__icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.75rem;
  transition:
    transform var(--transition-base),
    background var(--transition-base),
    color var(--transition-base);
  flex-shrink: 0;
}

.accordion__item.open .accordion__icon {
  transform: rotate(180deg);
  background: var(--accent-glow);
  color: var(--accent);
  border-color: var(--accent);
}

.accordion__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.accordion__item.open .accordion__panel {
  max-height: 2000px;
}

.accordion__lesson-list {
  display: flex;
  flex-direction: column;
}

.accordion__lesson {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-6) var(--space-3) calc(var(--space-6) + 36px + var(--space-4));
  border-top: 1px solid var(--border-color);
  transition: background var(--transition-fast);
}

.accordion__lesson:hover {
  background: var(--bg-glass);
}

.accordion__lesson-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.accordion__lesson-icon--video { color: var(--accent); border-color: rgba(0, 180, 255, 0.2); background: var(--accent-glow); }
.accordion__lesson-icon--quiz  { color: #ffb347; border-color: rgba(255, 179, 71, 0.2); background: rgba(255, 179, 71, 0.1); }
.accordion__lesson-icon--code  { color: var(--accent-success); border-color: rgba(0, 200, 150, 0.2); background: rgba(0, 200, 150, 0.1); }

.accordion__lesson-name {
  font-size: 0.875rem;
  color: var(--text-secondary);
  flex: 1;
  min-width: 0;
}

.accordion__lesson-duration {
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.accordion__lesson-badge {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.accordion__lesson-badge--free   { background: rgba(0, 200, 150, 0.15); color: var(--accent-success); }
.accordion__lesson-badge--locked { background: var(--bg-secondary); color: var(--text-muted); }

/* FAQ Accordion */
.faq-accordion .accordion__trigger {
  padding: var(--space-5) var(--space-6);
}

.faq-accordion .accordion__trigger-title {
  font-size: 1rem;
  font-weight: 600;
}

.faq-answer {
  padding: 0 var(--space-6) var(--space-5);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================================
   23. INSTRUCTOR CARD
   ============================================================ */

.instructor-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-6);
  align-items: start;
  padding: var(--space-6);
}

.instructor-card__photo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  border: 3px solid var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  overflow: hidden;
}

.instructor-card__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.instructor-card__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.instructor-card__name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.instructor-card__title {
  font-size: 0.9375rem;
  color: var(--accent);
  font-weight: 600;
}

.instructor-card__stats {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.instructor-card__stat {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.instructor-card__stat i {
  color: var(--accent);
  font-size: 0.8125rem;
}

.instructor-card__stat i.fa-users     { color: var(--accent); }
.instructor-card__stat i.fa-book-open { color: var(--accent-secondary); }

.instructor-card__bio {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.instructor-card__socials {
  display: flex;
  gap: var(--space-2);
}

.instructor-card__social {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  text-decoration: none;
  transition: all var(--transition-base);
}

.instructor-card__social:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
}

/* ============================================================
   24. REVIEWS SECTION
   ============================================================ */

.reviews-overview {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-8);
  align-items: center;
  padding: var(--space-6);
}

.reviews-overview__big {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-align: center;
}

.reviews-overview__number {
  font-family: var(--font-heading);
  font-size: 5rem;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.reviews-overview__stars {
  color: #fbbf24;
  font-size: 1.25rem;
  letter-spacing: 3px;
}

.reviews-overview__label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.reviews-overview__bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.rating-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.rating-bar__label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  width: 30px;
  text-align: right;
  flex-shrink: 0;
  font-weight: 600;
}

.rating-bar__track {
  flex: 1;
  height: 8px;
  background: var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.rating-bar__fill {
  height: 100%;
  background: var(--gradient-1);
  border-radius: var(--radius-full);
  transition: width 1s ease;
  animation: progressFill 1.2s ease both;
}

.rating-bar__pct {
  font-size: 0.75rem;
  color: var(--text-muted);
  width: 36px;
  flex-shrink: 0;
}

/* Reviews List */
.reviews-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  padding-top: 0;
}

.review-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.review-card:hover {
  border-color: rgba(0, 180, 255, 0.2);
  transform: translateY(-2px);
}

.review-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.review-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.review-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.review-card__avatar--1 { background: linear-gradient(135deg, #00b4ff, #7b5ea7); }
.review-card__avatar--2 { background: linear-gradient(135deg, #00c896, #00b4ff); }
.review-card__avatar--3 { background: linear-gradient(135deg, #ffb347, #ff4d6d); }

.review-card__name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
}

.review-card__date {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.review-card__stars {
  color: #fbbf24;
  font-size: 0.875rem;
  letter-spacing: 2px;
  flex-shrink: 0;
}

.review-card__text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Related Courses */
.related-courses {
  padding-block: var(--space-12);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.related-courses__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.related-courses__title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
}

.related-courses__subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.related-courses__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

/* Mini Course Card */
.mini-course-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    transform var(--transition-spring),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.mini-course-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 180, 255, 0.3);
  box-shadow: var(--shadow-card);
}

.mini-course-card__thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
}

.mini-course-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.mini-course-card:hover .mini-course-card__thumb img {
  transform: scale(1.06);
}

.mini-course-card__badge {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  backdrop-filter: blur(8px);
}

.mini-course-card__badge--beginner     { background: rgba(0, 200, 150, 0.9);  color: #fff; }
.mini-course-card__badge--intermediate { background: rgba(255, 179, 71, 0.9); color: #fff; }
.mini-course-card__badge--advanced     { background: rgba(255, 77, 109, 0.9); color: #fff; }

.mini-course-card__body {
  padding: var(--space-4) var(--space-4) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mini-course-card__category {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mini-course-card__title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.mini-course-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border-color);
  margin-top: var(--space-3);
}

.mini-course-card__price {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--accent);
}

.mini-course-card__rating {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.mini-course-card__rating-stars {
  color: #fbbf24;
  font-size: 0.75rem;
}

/* ============================================================
   25. ENROLLMENT PAGE
   ============================================================ */

/* Banner */
.enrollment-banner {
  padding-top: calc(72px + var(--space-12));
  padding-bottom: var(--space-10);
  text-align: center;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.enrollment-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 100%, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.enrollment-banner__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.enrollment-banner__title {
  font-size: clamp(1.75rem, 3.5vw, 3rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.025em;
  margin-bottom: var(--space-3);
}

.enrollment-banner__title span {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.enrollment-banner__sub {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* Enrollment Wrapper */
.enrollment-wrapper {
  max-width: 720px;
  margin-inline: auto;
  padding: var(--space-12) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

/* Stepper */
.stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.stepper__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  position: relative;
  z-index: 1;
}

.stepper__circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: all var(--transition-base);
}

.stepper__label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: color var(--transition-base);
}

.stepper__connector {
  flex: 1;
  height: 2px;
  background: var(--border-color);
  margin-bottom: 22px;
  transition: background var(--transition-slow);
  min-width: 40px;
}

.stepper__step--active .stepper__circle {
  background: var(--gradient-1);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}

.stepper__step--active .stepper__label {
  color: var(--accent);
}

.stepper__step--completed .stepper__circle {
  background: var(--accent-success);
  border-color: transparent;
  color: #fff;
}

.stepper__step--completed .stepper__label {
  color: var(--accent-success);
}

.stepper__connector--completed {
  background: var(--accent-success);
}

/* Enrollment Form */
.enrollment-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

/* Form Steps */
.form-step {
  display: none;
  padding: var(--space-10) var(--space-8);
  flex-direction: column;
  gap: var(--space-6);
  animation: fadeInUp 0.4s ease;
}

.form-step--active {
  display: flex;
}

.form-step__title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.form-step__subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-top: -var(--space-4);
}

/* Field Groups */
.field-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field-group__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.field-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font-heading);
  display: flex;
  align-items: center;
  gap: 4px;
}

.field-label span {
  color: var(--accent-danger);
  font-size: 0.875rem;
}

.field-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9375rem;
  outline: none;
  transition: all var(--transition-base);
  appearance: none;
  -webkit-appearance: none;
}

.field-input::placeholder {
  color: var(--text-muted);
}

.field-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--bg-card);
}

.field-input--error {
  border-color: var(--accent-danger);
  box-shadow: 0 0 0 3px rgba(255, 77, 109, 0.15);
}

.field-input--valid {
  border-color: var(--accent-success);
}

.field-error {
  font-size: 0.8125rem;
  color: var(--accent-danger);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  opacity: 0;
  transform: translateY(-4px);
  transition: all var(--transition-base);
}

.field-error--visible {
  opacity: 1;
  transform: translateY(0);
}

/* Step Navigation */
.step-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

.step-nav--end {
  justify-content: flex-end;
}

/* Plan Toggle */
.plan-toggle-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  width: fit-content;
}

.plan-toggle-btn {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition-base);
  font-family: var(--font-heading);
  border: none;
  background: none;
}

.plan-toggle-btn--active {
  background: var(--gradient-1);
  color: #fff;
  box-shadow: 0 4px 12px var(--accent-glow);
}

/* Plans Grid */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.plan-card {
  position: relative;
  cursor: pointer;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.plan-card:hover {
  border-color: rgba(0, 180, 255, 0.4);
  background: var(--bg-card);
  transform: translateY(-2px);
}

.plan-card--selected {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(0, 180, 255, 0.05) 0%, var(--bg-card) 100%);
  box-shadow: 0 0 20px var(--accent-glow);
}

.plan-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.plan-card__badge {
  position: absolute;
  top: -12px;
  right: 16px;
  padding: 4px 12px;
  background: var(--gradient-1);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.plan-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.plan-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--accent);
}

.plan-card__check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.plan-card--selected .plan-card__check {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.plan-card__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.plan-card__price {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.plan-card__price span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-left: 2px;
}

.plan-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-color);
}

.plan-card__features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.plan-card__features li i {
  color: var(--accent-success);
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* Order Summary */
.order-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  flex-wrap: wrap;
}

.order-summary__left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.order-summary__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--accent);
}

.order-summary__plan {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
}

.order-summary__billing {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.order-summary__price {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Payment Tabs */
.payment-tabs {
  display: flex;
  align-items: center;
  gap: 0;
  border-bottom: 2px solid var(--border-color);
  position: relative;
}

.payment-tab {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border: none;
  background: none;
  font-family: var(--font-heading);
  position: relative;
  transition: color var(--transition-base);
  white-space: nowrap;
}

.payment-tab:hover {
  color: var(--text-secondary);
}

.payment-tab--active {
  color: var(--accent);
}

.payment-tab--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-1);
  border-radius: var(--radius-full) var(--radius-full) 0 0;
}

.payment-method {
  display: none;
  flex-direction: column;
  gap: var(--space-5);
  padding-top: var(--space-5);
}

.payment-method.active {
  display: flex;
}

/* Card Preview */
.card-preview-container {
  display: flex;
  justify-content: center;
  perspective: 1000px;
}

.card-preview {
  width: 340px;
  height: 200px;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: var(--radius-lg);
}

.card-preview--flipped {
  transform: rotateY(180deg);
}

.card-face {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.card-face--front {
  background: linear-gradient(135deg, #1a1a3e 0%, #2d1b69 50%, #0a1628 100%);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-face--back {
  background: linear-gradient(135deg, #0a1628 0%, #1a1a3e 100%);
  transform: rotateY(180deg);
}

.card-face::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0, 180, 255, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.card-face::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(123, 94, 167, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.card-logo-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-brand-name {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.02em;
}

.card-network {
  font-size: 0.75rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.card-chip {
  width: 44px;
  height: 34px;
  background: linear-gradient(135deg, #d4a017, #f0c040);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
}

.card-chip::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 3px;
}

.card-number-display {
  font-family: 'Courier New', monospace;
  font-size: 1.0625rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 3px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.card-bottom-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-4);
}

.card-holder-label,
.card-expiry-label {
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 3px;
}

.card-holder-name,
.card-expiry-value {
  font-size: 0.9rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.card-stripe {
  position: absolute;
  top: 32px;
  left: 0;
  right: 0;
  height: 48px;
  background: rgba(0, 0, 0, 0.8);
}

.card-cvv-row {
  position: absolute;
  top: 100px;
  left: var(--space-5);
  right: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

.card-cvv-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.6);
}

.card-cvv-box {
  width: 60px;
  height: 36px;
  background: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Courier New', monospace;
  font-size: 0.9375rem;
  font-weight: 700;
  color: #111;
  letter-spacing: 3px;
}

/* Card Fields */
.card-fields {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.card-fields__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

/* PayPal */
.paypal-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-8);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-align: center;
}

.paypal-box__logo {
  display: flex;
  align-items: baseline;
  gap: 0;
  font-family: 'Arial', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
}

.paypal-box__logo span:first-child { color: #003087; }
.paypal-box__logo span:last-child  { color: #009cde; }

[data-theme="dark"] .paypal-box__logo span:first-child { color: #5b9bd5; }
[data-theme="dark"] .paypal-box__logo span:last-child  { color: #009cde; }

.paypal-box__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  max-width: 360px;
  line-height: 1.6;
}

/* Crypto */
.crypto-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.crypto-selector {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.crypto-option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.crypto-option:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.crypto-option--selected {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.qr-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-8);
  background: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  text-align: center;
}

.qr-placeholder i {
  font-size: 3rem;
  color: var(--text-muted);
  opacity: 0.4;
}

/* Terms */
.terms-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.terms-checkbox {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border-color);
  cursor: pointer;
  accent-color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.terms-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  cursor: pointer;
}

.terms-label a {
  color: var(--accent);
  text-decoration: underline;
}

/* Payment Loading */
.loader {
  display: none;
  align-items: center;
  gap: var(--space-2);
}

.loader.active {
  display: flex;
}

.payment-loading {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  padding: var(--space-16);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.payment-loading.active {
  display: flex;
}

/* ============================================================
   26. SUCCESS SCREEN
   ============================================================ */

.success-screen {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-5);
  padding: var(--space-16) var(--space-8);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  animation: scaleIn 0.5s var(--transition-spring) both;
}

.success-screen.active {
  display: flex;
}

.success-screen__checkmark {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 200, 150, 0.15), rgba(0, 200, 150, 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--accent-success);
  box-shadow: 0 0 30px rgba(0, 200, 150, 0.3);
}

.success-screen__checkmark svg {
  width: 52px;
  height: 52px;
}

.checkmark-circle {
  fill: none;
  stroke: var(--accent-success);
  stroke-width: 2;
  stroke-dasharray: 166;
  stroke-dashoffset: 166;
  animation: drawCheck 0.9s ease 0.3s forwards;
}

.checkmark-tick {
  fill: none;
  stroke: var(--accent-success);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 48;
  stroke-dashoffset: 48;
  animation: drawCheck 0.4s ease 0.9s forwards;
}

.success-screen__emoji {
  font-size: 2.5rem;
  animation: bounceIn 0.5s var(--transition-spring) 0.5s both;
}

.success-screen__title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.success-screen__welcome {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.success-screen__welcome strong {
  color: var(--accent);
}

.success-screen__summary {
  width: 100%;
  max-width: 400px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.success-screen__summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.success-screen__summary-row:not(:last-child) {
  border-bottom: 1px solid var(--border-color);
}

.success-screen__summary-row span:first-child {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.success-screen__summary-row span:last-child {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.success-screen__note {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.success-screen__note i {
  color: var(--accent);
}

.success-screen__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

/* Confetti Canvas */
#confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9998;
}

/* ============================================================
   27. TRUST BADGES
   ============================================================ */

.trust-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  flex-wrap: wrap;
  padding: var(--space-5) var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.trust-badge i {
  font-size: 1.25rem;
  color: var(--accent);
}

/* ============================================================
   28. LIGHT MODE OVERRIDES
   ============================================================ */

[data-theme="light"] .hero {
  background: var(--bg-primary);
}

[data-theme="light"] .hero__card {
  background: #fff;
  box-shadow: 0 0 60px rgba(0, 144, 204, 0.1), 0 20px 60px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .hero__card-code {
  background: #fafafa;
}

[data-theme="light"] .features {
  background: #f0f1f8;
}

[data-theme="light"] .pricing::before {
  opacity: 0.15;
}

[data-theme="light"] .card-face--front {
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #1e40af 100%);
}

/* ============================================================
   29. RESPONSIVE BREAKPOINTS
   ============================================================ */

/* 1100px */
@media (max-width: 1100px) {
  .course-hero__container,
  .course-body__container {
    grid-template-columns: 1fr;
  }

  .course-preview-card {
    max-width: 500px;
    margin-inline: auto;
    position: static;
  }

  .course-body__sidebar {
    order: -1;
    position: static;
  }

  .related-courses__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing__card--featured {
    transform: none;
  }

  .pricing__card--featured:hover {
    transform: translateY(-6px);
  }
}

/* 1024px */
@media (max-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__top {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__container {
    grid-template-columns: 1fr;
    padding-block: var(--space-16);
    text-align: center;
  }

  .hero__content {
    align-items: center;
  }

  .hero__stats {
    justify-content: center;
  }

  .hero__visual {
    display: none;
  }

  .paths__grid {
    grid-template-columns: 1fr 1fr;
  }

  .testimonials__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* 768px */
@media (max-width: 768px) {
  .section {
    padding-block: var(--space-16);
  }

  .about__container {
    grid-template-columns: 1fr;
  }

  .about__mission-vision {
    grid-template-columns: 1fr;
  }

  .contact__container {
    grid-template-columns: 1fr;
  }

  .hero__container {
    grid-template-columns: 1fr;
  }

  .hero__headline {
    font-size: 2.5rem;
  }

  .testimonials__grid {
    grid-template-columns: 1fr;
  }

  .paths__grid {
    grid-template-columns: 1fr;
  }

  .pricing__grid {
    grid-template-columns: 1fr 1fr;
  }

  .features__grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer__top {
    grid-template-columns: 1fr 1fr;
  }

  .courses-filters {
    position: static;
  }

  .courses-filters__row--top {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    max-width: none;
  }

  .filter-selects {
    flex-direction: column;
    align-items: stretch;
  }

  .page-hero__stats {
    gap: var(--space-6);
  }

  .courses-grid {
    grid-template-columns: 1fr;
  }

  .learn-grid {
    grid-template-columns: 1fr;
  }

  .instructor-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .instructor-card__socials {
    justify-content: center;
  }

  .instructor-card__stats {
    justify-content: center;
  }

  .reviews-overview {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .related-courses__grid {
    grid-template-columns: 1fr;
  }

  .course-hero__cta-group {
    flex-direction: column;
    align-items: flex-start;
  }

  .course-hero__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .plans-grid {
    grid-template-columns: 1fr;
  }

  .field-group__row,
  .card-fields__row {
    grid-template-columns: 1fr;
  }

  .stepper__connector {
    min-width: 20px;
  }

  .stepper__label {
    font-size: 0.625rem;
  }

  .stepper__circle {
    width: 36px;
    height: 36px;
    font-size: 0.875rem;
  }

  .payment-tabs {
    flex-wrap: wrap;
  }

  .card-preview {
    width: 100%;
    max-width: 320px;
    height: 185px;
  }

  .enrollment-wrapper {
    padding-inline: var(--space-4);
    padding-block: var(--space-8);
  }

  .form-step {
    padding: var(--space-6) var(--space-5);
  }
}

/* 640px */
@media (max-width: 640px) {
  .hero__cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__cta-group .btn {
    justify-content: center;
  }

  .hero__stats {
    gap: var(--space-4);
  }

  .hero__stat-divider {
    display: none;
  }
}

/* 480px */
@media (max-width: 480px) {
  .pricing__grid {
    grid-template-columns: 1fr;
  }

  .features__grid {
    grid-template-columns: 1fr;
  }

  .footer__top {
    grid-template-columns: 1fr;
  }

  .filter-pills {
    gap: var(--space-1);
  }

  .filter-btn {
    padding: 6px 14px;
    font-size: 0.8125rem;
  }

  .crypto-grid {
    grid-template-columns: 1fr;
  }

  .trust-badges {
    gap: var(--space-4);
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__headline {
    font-size: 2rem;
  }

  .section__title {
    font-size: 1.75rem;
  }

  .page-hero__title {
    font-size: 1.75rem;
  }
}

/* ============================================================
   30. PRINT STYLES
   ============================================================ */

@media print {
  .navbar,
  .back-to-top,
  .scroll-progress,
  .hero__canvas,
  .hero__bg {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }
}
```

Now let me create the animations file: