/* ============================================================
   ECOURSES — Base Design System
   Online Education / Course Marketplace
   ============================================================ */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  /* Brand Colors */
  --clr-indigo: #4338CA;
  --clr-indigo-dark: #3730A3;
  --clr-indigo-light: #6366F1;
  --clr-amber: #F59E0B;
  --clr-amber-dark: #D97706;
  --clr-amber-light: #FBBF24;
  --clr-charcoal: #1E1B2E;
  --clr-charcoal-light: #2D2A3E;
  --clr-light: #F5F3FF;
  --clr-white: #FFFFFF;
  --clr-gray-50: #FAFAFA;
  --clr-gray-100: #F4F4F5;
  --clr-gray-200: #E4E4E7;
  --clr-gray-300: #D4D4D8;
  --clr-gray-400: #A1A1AA;
  --clr-gray-500: #71717A;
  --clr-gray-600: #52525B;
  --clr-gray-700: #3F3F46;
  --clr-gray-800: #27272A;
  --clr-success: #10B981;
  --clr-error: #EF4444;

  /* Typography */
  --ff-heading: 'DM Sans', sans-serif;
  --ff-body: 'Inter', sans-serif;
  --fs-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.75rem);
  --fs-sm: clamp(0.8rem, 0.75rem + 0.25vw, 0.875rem);
  --fs-base: clamp(0.9rem, 0.85rem + 0.25vw, 1rem);
  --fs-md: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --fs-lg: clamp(1.15rem, 1rem + 0.75vw, 1.35rem);
  --fs-xl: clamp(1.4rem, 1.1rem + 1.5vw, 1.875rem);
  --fs-2xl: clamp(1.8rem, 1.3rem + 2.5vw, 2.5rem);
  --fs-3xl: clamp(2.2rem, 1.5rem + 3.5vw, 3.25rem);
  --fs-hero: clamp(2.5rem, 1.5rem + 5vw, 4.25rem);
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* Spacing */
  --sp-xs: 0.25rem;
  --sp-sm: 0.5rem;
  --sp-md: 1rem;
  --sp-lg: 1.5rem;
  --sp-xl: 2rem;
  --sp-2xl: 3rem;
  --sp-3xl: 4rem;
  --sp-4xl: 6rem;
  --sp-section: clamp(4rem, 3rem + 5vw, 7rem);

  /* Layout */
  --max-w: 1200px;
  --max-w-narrow: 900px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(30, 27, 46, 0.06);
  --shadow-md: 0 4px 16px rgba(30, 27, 46, 0.08);
  --shadow-lg: 0 8px 30px rgba(30, 27, 46, 0.12);
  --shadow-xl: 0 16px 50px rgba(30, 27, 46, 0.16);
  --shadow-card: 0 2px 12px rgba(67, 56, 202, 0.06);
  --shadow-card-hover: 0 12px 36px rgba(67, 56, 202, 0.14);

  /* Transitions */
  --tr-fast: 180ms ease;
  --tr-base: 280ms ease;
  --tr-slow: 400ms ease;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--clr-charcoal);
  background: var(--clr-white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; border: none; background: none; }
button { cursor: pointer; }
table { border-collapse: collapse; }

/* ── Typography ────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  line-height: 1.2;
  color: var(--clr-charcoal);
}
h1 { font-size: var(--fs-hero); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-2xl); letter-spacing: -0.015em; }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }
h5 { font-size: var(--fs-md); }
p { margin-bottom: var(--sp-md); color: var(--clr-gray-600); }
strong { font-weight: var(--fw-semibold); }
small { font-size: var(--fs-sm); }
.section-subtitle {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-indigo);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--sp-md);
}
.section-subtitle svg { width: 18px; height: 18px; flex-shrink: 0; }
.section-title { margin-bottom: var(--sp-md); }
.section-desc {
  font-size: var(--fs-md);
  color: var(--clr-gray-500);
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--sp-2xl);
}
.text-center { text-align: center; }

/* ── Layout ────────────────────────────────────────────────── */
.container {
  width: min(100% - var(--sp-xl) * 2, var(--max-w));
  margin-inline: auto;
}
.container--narrow {
  width: min(100% - var(--sp-xl) * 2, var(--max-w-narrow));
}
.section { padding-block: var(--sp-section); }
.section--light { background: var(--clr-light); }
.section--dark { background: var(--clr-charcoal); color: var(--clr-white); }
.section--dark h2, .section--dark h3, .section--dark h4 { color: var(--clr-white); }
.section--dark p { color: var(--clr-gray-300); }

/* Grid helpers */
.grid { display: grid; gap: var(--sp-xl); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm { gap: var(--sp-sm); }
.gap-md { gap: var(--sp-md); }
.gap-lg { gap: var(--sp-lg); }
.gap-xl { gap: var(--sp-xl); }

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  padding: 0.75rem 1.75rem;
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-full);
  transition: all var(--tr-base);
  white-space: nowrap;
  line-height: 1.2;
}
.btn svg { width: 16px; height: 16px; }
.btn--primary {
  background: var(--clr-indigo);
  color: var(--clr-white);
  box-shadow: 0 4px 14px rgba(67, 56, 202, 0.35);
}
.btn--primary:hover {
  background: var(--clr-indigo-dark);
  box-shadow: 0 6px 20px rgba(67, 56, 202, 0.45);
  transform: translateY(-2px);
}
.btn--secondary {
  background: var(--clr-amber);
  color: var(--clr-charcoal);
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
}
.btn--secondary:hover {
  background: var(--clr-amber-dark);
  transform: translateY(-2px);
}
.btn--outline {
  border: 2px solid var(--clr-indigo);
  color: var(--clr-indigo);
  background: transparent;
}
.btn--outline:hover {
  background: var(--clr-indigo);
  color: var(--clr-white);
}
.btn--white {
  background: var(--clr-white);
  color: var(--clr-indigo);
}
.btn--white:hover {
  background: var(--clr-light);
  transform: translateY(-2px);
}
.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--fs-xs);
}
.btn--lg {
  padding: 1rem 2.25rem;
  font-size: var(--fs-base);
}
.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ── Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--tr-base);
}
.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.card__img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}
.card__body { padding: var(--sp-lg); }

/* ── Badges ────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0.25rem 0.75rem;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-full);
  line-height: 1.4;
}
.badge--primary { background: rgba(67, 56, 202, 0.1); color: var(--clr-indigo); }
.badge--amber { background: rgba(245, 158, 11, 0.12); color: var(--clr-amber-dark); }
.badge--success { background: rgba(16, 185, 129, 0.1); color: var(--clr-success); }
.badge--enroll {
  position: absolute;
  top: var(--sp-md);
  right: var(--sp-md);
  background: var(--clr-amber);
  color: var(--clr-charcoal);
  font-weight: var(--fw-bold);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  z-index: 2;
}

/* ── Progress Bar ──────────────────────────────────────────── */
.progress {
  width: 100%;
  height: 6px;
  background: var(--clr-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress__bar {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--clr-indigo), var(--clr-indigo-light));
  transition: width 1s ease-out;
}
.progress--amber .progress__bar {
  background: linear-gradient(90deg, var(--clr-amber), var(--clr-amber-light));
}

/* ── Pill Filters ──────────────────────────────────────────── */
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  justify-content: center;
}
.pill {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  background: var(--clr-gray-100);
  color: var(--clr-gray-600);
  transition: all var(--tr-fast);
  border: 2px solid transparent;
  cursor: pointer;
}
.pill:hover { background: var(--clr-light); color: var(--clr-indigo); }
.pill--active {
  background: var(--clr-indigo);
  color: var(--clr-white);
  border-color: var(--clr-indigo);
}

/* ── Navigation ────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--sp-md) 0;
  transition: all var(--tr-base);
}
.nav--scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  padding: var(--sp-sm) 0;
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-family: var(--ff-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--clr-charcoal);
}
.nav--hero .nav__logo { color: var(--clr-white); }
.nav--scrolled .nav__logo { color: var(--clr-charcoal); }
.nav__logo-icon {
  width: 36px;
  height: 36px;
  background: var(--clr-indigo);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
}
.nav__logo-icon svg { width: 20px; height: 20px; }
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-xl);
}
.nav__link {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-gray-600);
  transition: color var(--tr-fast);
  position: relative;
}
.nav--hero .nav__link { color: rgba(255, 255, 255, 0.8); }
.nav--scrolled .nav__link { color: var(--clr-gray-600); }
.nav__link:hover,
.nav__link--active {
  color: var(--clr-indigo);
}
.nav--hero .nav__link:hover,
.nav--hero .nav__link--active {
  color: var(--clr-white);
}
.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--clr-indigo);
  border-radius: 1px;
}
.nav__cta {
  margin-left: var(--sp-md);
}
.nav__burger {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  z-index: 1001;
}
.nav__burger span {
  width: 24px;
  height: 2px;
  background: var(--clr-charcoal);
  border-radius: 2px;
  transition: all var(--tr-base);
}
.nav--hero .nav__burger span { background: var(--clr-white); }
.nav__burger--open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__burger--open span:nth-child(2) { opacity: 0; }
.nav__burger--open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile menu */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--clr-white);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-xl);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--tr-base);
}
.nav__mobile--open {
  opacity: 1;
  pointer-events: all;
}
.nav__mobile a {
  font-family: var(--ff-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  color: var(--clr-charcoal);
  transition: color var(--tr-fast);
}
.nav__mobile a:hover { color: var(--clr-indigo); }

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--clr-charcoal) 0%, #2a1f5e 50%, var(--clr-indigo) 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(245, 158, 11, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.12) 0%, transparent 50%);
  pointer-events: none;
}
.hero__pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 1;
  padding-block: 8rem;
}
.hero__content { max-width: 680px; }
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  color: var(--clr-amber-light);
  margin-bottom: var(--sp-xl);
}
.hero__badge svg { width: 16px; height: 16px; }
.hero h1 {
  color: var(--clr-white);
  margin-bottom: var(--sp-lg);
}
.hero h1 span {
  color: var(--clr-amber);
}
.hero__text {
  font-size: var(--fs-md);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--sp-2xl);
  max-width: 540px;
}
.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  margin-bottom: var(--sp-2xl);
  flex-wrap: wrap;
}
.hero__search {
  display: flex;
  align-items: center;
  background: var(--clr-white);
  border-radius: var(--radius-full);
  padding: 0.4rem;
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-xl);
}
.hero__search input {
  flex: 1;
  padding: 0.75rem 1.25rem;
  font-size: var(--fs-base);
  border-radius: var(--radius-full);
  outline: none;
  min-width: 0;
}
.hero__search input::placeholder { color: var(--clr-gray-400); }
.hero__search .btn {
  flex-shrink: 0;
}
.hero__stats {
  display: flex;
  gap: var(--sp-2xl);
  padding-top: var(--sp-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.hero__stat-num {
  font-family: var(--ff-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  display: block;
}
.hero__stat-label {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.5);
}
.hero__img {
  position: absolute;
  right: -5%;
  bottom: 0;
  width: 45%;
  max-width: 560px;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  object-fit: cover;
  opacity: 0.2;
  mask-image: linear-gradient(to top, transparent, black 30%);
  -webkit-mask-image: linear-gradient(to top, transparent, black 30%);
}

/* ── Page Header ───────────────────────────────────────────── */
.page-header {
  position: relative;
  padding: 10rem 0 4rem;
  background: linear-gradient(135deg, var(--clr-charcoal), var(--clr-indigo-dark));
  text-align: center;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 30% 70%, rgba(245, 158, 11, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
}
.page-header .container { position: relative; z-index: 1; }
.page-header h1 { color: var(--clr-white); margin-bottom: var(--sp-md); }
.page-header p { color: rgba(255, 255, 255, 0.6); font-size: var(--fs-md); }
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-lg);
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.5);
}
.breadcrumb a { color: rgba(255, 255, 255, 0.7); transition: color var(--tr-fast); }
.breadcrumb a:hover { color: var(--clr-amber); }
.breadcrumb svg { width: 14px; height: 14px; }

/* ── Categories ────────────────────────────────────────────── */
.categories__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-lg);
}
.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--tr-slow);
}
.category-card:hover img { transform: scale(1.08); }
.category-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(30, 27, 46, 0.85), rgba(30, 27, 46, 0.2));
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--sp-lg);
  transition: background var(--tr-base);
}
.category-card:hover .category-card__overlay {
  background: linear-gradient(to top, rgba(67, 56, 202, 0.9), rgba(67, 56, 202, 0.3));
}
.category-card__name {
  font-family: var(--ff-heading);
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  margin-bottom: 2px;
}
.category-card__count {
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.6);
}
.category-card__icon {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-sm);
  color: var(--clr-amber);
}
.category-card__icon svg { width: 22px; height: 22px; }

/* ── Course Cards ──────────────────────────────────────────── */
.course-card {
  position: relative;
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--tr-base);
}
.course-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px);
}
.course-card__img-wrap {
  position: relative;
  overflow: hidden;
}
.course-card__img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: transform var(--tr-slow);
}
.course-card:hover .course-card__img { transform: scale(1.05); }
.course-card__category {
  position: absolute;
  top: var(--sp-md);
  left: var(--sp-md);
}
.course-card__body { padding: var(--sp-lg); }
.course-card__title {
  font-family: var(--ff-heading);
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  margin-bottom: var(--sp-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.course-card__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  font-size: var(--fs-xs);
  color: var(--clr-gray-500);
  margin-bottom: var(--sp-md);
}
.course-card__meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}
.course-card__meta-item svg { width: 14px; height: 14px; }
.course-card__rating {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--clr-amber);
}
.course-card__rating span { color: var(--clr-gray-500); font-size: var(--fs-xs); }
.course-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-md);
  border-top: 1px solid var(--clr-gray-100);
}
.course-card__price {
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-lg);
  color: var(--clr-indigo);
}
.course-card__price s {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  font-weight: var(--fw-regular);
  margin-right: 4px;
}
.course-card__instructor {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}
.course-card__avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  object-fit: cover;
}
.course-card__name {
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
}

/* ── Team / Instructor ─────────────────────────────────────── */
.team-card {
  text-align: center;
}
.team-card__img-wrap {
  position: relative;
  width: 160px;
  height: 160px;
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0 auto var(--sp-lg);
  border: 4px solid var(--clr-light);
  box-shadow: var(--shadow-md);
}
.team-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.team-card__name {
  font-family: var(--ff-heading);
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  margin-bottom: 4px;
}
.team-card__role {
  font-size: var(--fs-sm);
  color: var(--clr-indigo);
  font-weight: var(--fw-medium);
  margin-bottom: var(--sp-md);
}
.team-card__socials {
  display: flex;
  justify-content: center;
  gap: var(--sp-sm);
}
.team-card__social-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--clr-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-gray-500);
  transition: all var(--tr-fast);
}
.team-card__social-link:hover {
  background: var(--clr-indigo);
  color: var(--clr-white);
}
.team-card__social-link svg { width: 16px; height: 16px; }

/* ── Testimonials ──────────────────────────────────────────── */
.testimonial-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  box-shadow: var(--shadow-card);
  position: relative;
}
.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: var(--sp-md);
  right: var(--sp-xl);
  font-size: 4rem;
  font-family: Georgia, serif;
  color: var(--clr-indigo);
  opacity: 0.1;
  line-height: 1;
}
.testimonial-card__stars {
  display: flex;
  gap: 2px;
  margin-bottom: var(--sp-md);
  color: var(--clr-amber);
}
.testimonial-card__stars svg { width: 16px; height: 16px; }
.testimonial-card__text {
  font-size: var(--fs-base);
  color: var(--clr-gray-600);
  margin-bottom: var(--sp-lg);
  font-style: italic;
  line-height: 1.8;
}
.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}
.testimonial-card__avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
}
.testimonial-card__name {
  font-family: var(--ff-heading);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
}
.testimonial-card__course {
  font-size: var(--fs-xs);
  color: var(--clr-gray-500);
}

/* ── Stats / Counter ───────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-xl);
  text-align: center;
}
.stat-item__num {
  font-family: var(--ff-heading);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--clr-indigo);
  display: block;
  line-height: 1.1;
}
.stat-item__label {
  font-size: var(--fs-sm);
  color: var(--clr-gray-500);
  margin-top: var(--sp-xs);
}

/* ── CTA / Enroll Section ─────────────────────────────────── */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, var(--clr-indigo) 0%, var(--clr-indigo-dark) 100%);
  border-radius: var(--radius-xl);
  padding: var(--sp-3xl);
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(245, 158, 11, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { color: var(--clr-white); margin-bottom: var(--sp-md); }
.cta-section p { color: rgba(255, 255, 255, 0.7); margin-bottom: var(--sp-xl); max-width: 560px; margin-inline: auto; }
.cta-section .btn--secondary { box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4); }

/* ── Forms ─────────────────────────────────────────────────── */
.form-group {
  margin-bottom: var(--sp-lg);
}
.form-label {
  display: block;
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-charcoal);
  margin-bottom: var(--sp-sm);
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--clr-gray-200);
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  transition: border-color var(--tr-fast);
  background: var(--clr-white);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--clr-indigo);
  box-shadow: 0 0 0 3px rgba(67, 56, 202, 0.1);
}
.form-textarea { min-height: 140px; resize: vertical; }
.form-select { appearance: none; cursor: pointer; }
.form-msg {
  margin-top: var(--sp-sm);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  display: none;
}
.form-msg--ok { color: var(--clr-success); display: block; }
.form-msg--err { color: var(--clr-error); display: block; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg);
}

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  background: var(--clr-charcoal);
  color: var(--clr-gray-300);
  padding-top: var(--sp-4xl);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--sp-2xl);
  padding-bottom: var(--sp-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer__brand { max-width: 320px; }
.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-family: var(--ff-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  margin-bottom: var(--sp-md);
}
.footer__logo-icon {
  width: 36px;
  height: 36px;
  background: var(--clr-indigo);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
}
.footer__logo-icon svg { width: 20px; height: 20px; }
.footer__text {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  margin-bottom: var(--sp-lg);
  line-height: 1.8;
}
.footer__socials {
  display: flex;
  gap: var(--sp-sm);
}
.footer__social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-gray-400);
  transition: all var(--tr-fast);
}
.footer__social-link:hover {
  background: var(--clr-indigo);
  color: var(--clr-white);
}
.footer__social-link svg { width: 18px; height: 18px; }
.footer__heading {
  font-family: var(--ff-heading);
  font-size: var(--fs-base);
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  margin-bottom: var(--sp-lg);
}
.footer__links { display: flex; flex-direction: column; gap: var(--sp-sm); }
.footer__link {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  transition: color var(--tr-fast);
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}
.footer__link:hover { color: var(--clr-amber); }
.footer__link svg { width: 14px; height: 14px; flex-shrink: 0; }
.footer__newsletter-text {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  margin-bottom: var(--sp-md);
}
.footer__newsletter-form {
  display: flex;
  gap: var(--sp-sm);
}
.footer__newsletter-form input {
  flex: 1;
  padding: 0.65rem 1rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  color: var(--clr-white);
  font-size: var(--fs-sm);
}
.footer__newsletter-form input::placeholder { color: var(--clr-gray-500); }
.footer__newsletter-form input:focus { outline: none; border-color: var(--clr-indigo); }
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--sp-lg);
  font-size: var(--fs-xs);
  color: var(--clr-gray-500);
}

/* ── Reveal Animations ─────────────────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal="left"] { transform: translateX(-24px); }
[data-reveal="left"].revealed { transform: translateX(0); }
[data-reveal="right"] { transform: translateX(24px); }
[data-reveal="right"].revealed { transform: translateX(0); }
[data-reveal="scale"] { transform: scale(0.95); }
[data-reveal="scale"].revealed { transform: scale(1); }

/* ── About Page Extras ─────────────────────────────────────── */
.about-intro__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3xl);
  align-items: center;
}
.about-intro__img {
  border-radius: var(--radius-lg);
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.about-intro__content h3 { margin-bottom: var(--sp-md); }
.about-intro__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
}
.about-intro__list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-md);
}
.about-intro__list-icon {
  width: 44px;
  height: 44px;
  background: rgba(67, 56, 202, 0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-indigo);
  flex-shrink: 0;
}
.about-intro__list-icon svg { width: 22px; height: 22px; }
.about-intro__list-title {
  font-family: var(--ff-heading);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-base);
  margin-bottom: 2px;
}
.about-intro__list-desc {
  font-size: var(--fs-sm);
  color: var(--clr-gray-500);
  margin-bottom: 0;
}

.mission-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  box-shadow: var(--shadow-card);
  text-align: center;
}
.mission-card__icon {
  width: 56px;
  height: 56px;
  background: rgba(67, 56, 202, 0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-indigo);
  margin: 0 auto var(--sp-md);
}
.mission-card__icon svg { width: 28px; height: 28px; }
.mission-card h4 { margin-bottom: var(--sp-sm); }

/* ── Contact Page ──────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--sp-2xl);
}
.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-md);
  padding: var(--sp-lg);
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}
.contact-info-card__icon {
  width: 48px;
  height: 48px;
  background: rgba(67, 56, 202, 0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-indigo);
  flex-shrink: 0;
}
.contact-info-card__icon svg { width: 22px; height: 22px; }
.contact-info-card__title {
  font-family: var(--ff-heading);
  font-weight: var(--fw-semibold);
  margin-bottom: 4px;
}
.contact-info-card__text {
  font-size: var(--fs-sm);
  color: var(--clr-gray-500);
  margin-bottom: 0;
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--clr-gray-100); }
::-webkit-scrollbar-thumb { background: var(--clr-gray-300); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-gray-400); }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 980px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .categories__grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: var(--sp-lg); }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
  .hero__img { display: none; }
  .about-intro__grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .categories__grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero__stats { flex-direction: column; gap: var(--sp-md); }

  /* Burger menu */
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .nav__mobile { display: flex; }

  .hero__search { flex-direction: column; border-radius: var(--radius-lg); }
  .hero__search input { border-radius: var(--radius-md); }
  .hero__search .btn { width: 100%; }
  .hero__actions { flex-direction: column; align-items: stretch; }

  .cta-section { padding: var(--sp-2xl) var(--sp-lg); }
}