:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-2: #eef3f8;
  --text: #121722;
  --muted: #617086;
  --line: rgba(18, 23, 34, .1);
  --brand: #0f9f7a;
  --brand-2: #1d6ee8;
  --gold: #d9a441;
  --danger: #d94242;
  --shadow: 0 24px 70px rgba(25, 36, 65, .14);
}

[data-theme="dark"] {
  --bg: #080b10;
  --panel: #111821;
  --panel-2: #172230;
  --text: #edf3fb;
  --muted: #a1adbd;
  --line: rgba(255, 255, 255, .1);
  --shadow: 0 24px 80px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background:
    radial-gradient(circle at 15% 0%, rgba(15,159,122,.12), transparent 28%),
    radial-gradient(circle at 85% 6%, rgba(217,164,65,.10), transparent 24%),
    var(--bg);
  color: var(--text);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
main { min-height: 72vh; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px clamp(18px, 4vw, 64px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.brand span {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  color: white;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-weight: 700;
  color: var(--muted);
}

.nav a:hover { color: var(--text); }
.nav-toggle { display: none; }

button, .btn, .main-btn {
  border: 0;
  border-radius: 7px;
  padding: 12px 16px;
  background: var(--text);
  color: var(--bg);
  font-weight: 850;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(15, 159, 122, .14);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
}

.main-btn, .btn.primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: white; }
.btn.light { background: color-mix(in srgb, var(--panel-2) 82%, var(--panel)); color: var(--text); box-shadow: none; border: 1px solid var(--line); }
.btn.danger { background: var(--danger); color: white; }
.btn.small { padding: 9px 12px; font-size: 13px; white-space: nowrap; }
button:hover, .btn:hover, .main-btn:hover { transform: translateY(-2px); filter: saturate(1.08); box-shadow: 0 16px 34px rgba(29, 110, 232, .18); }
.theme-btn { width: 42px; height: 42px; padding: 0; background: var(--panel-2); color: var(--text); box-shadow: none; }

.hero {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 36px;
  align-items: center;
  padding: clamp(52px, 7vw, 96px) clamp(18px, 4vw, 64px);
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(42px, 7vw, 92px);
  line-height: .95;
  letter-spacing: 0;
}

.hero p {
  max-width: 650px;
  margin: 22px 0 30px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.6;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.market-cube {
  position: relative;
  min-height: 440px;
  perspective: 1000px;
}

.cube-card {
  position: absolute;
  inset: 46px 18px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, var(--panel), var(--panel-2));
  box-shadow: var(--shadow);
  transform: rotateX(10deg) rotateY(-12deg);
  animation: floatCard 6s ease-in-out infinite;
}

.mini-top, .course-meta, .plan-top, .dashboard-head, .support-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.mini-top span { color: var(--brand); font-weight: 900; }

.chart {
  height: 210px;
  margin: 30px 0;
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(15,159,122,.22), transparent),
    repeating-linear-gradient(to right, transparent 0 42px, var(--line) 43px),
    repeating-linear-gradient(to bottom, transparent 0 42px, var(--line) 43px);
}

.candles {
  display: flex;
  align-items: end;
  gap: 12px;
  height: 100%;
  padding: 24px;
}

.candles i {
  display: block;
  width: 18px;
  border-radius: 5px;
  background: var(--brand);
  box-shadow: 0 -20px 0 rgba(15,159,122,.28);
}

.section {
  padding: 68px clamp(18px, 4vw, 64px);
  border-top: 1px solid var(--line);
}

.band-soft {
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--panel-2) 55%, transparent), transparent);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
}

.section h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 54px);
}

.muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid.four { grid-template-columns: repeat(4, 1fr); }

.card, .course-card, .admin-box, .review-card, .stat-card, .feature-card, .plan-card, .payment-card, .profile-mini {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.card, .course-card, .review-card, .stat-card, .feature-card, .plan-card, .payment-card, .profile-mini {
  position: relative;
  overflow: hidden;
}

.card::before, .course-card::before, .review-card::before, .stat-card::before, .feature-card::before, .plan-card::before, .payment-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(15,159,122,.12), transparent 38%, rgba(217,164,65,.09));
  opacity: .75;
}

.course-card {
  display: block;
  overflow: hidden;
  color: var(--text);
  transition: transform .2s ease, box-shadow .2s ease;
}
.course-card:hover { transform: translateY(-7px) rotateX(1deg); box-shadow: 0 30px 80px rgba(29, 110, 232, .18); border-color: color-mix(in srgb, var(--brand) 45%, var(--line)); }
.course-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.compact-courses .course-card img { aspect-ratio: 16/9; }
.course-body { position: relative; z-index: 1; padding: 20px; }
.compact-courses .course-body { padding: 15px; }
.course-body h3 { margin: 0 0 10px; font-size: 22px; }
.compact-courses .course-body h3 { font-size: 18px; line-height: 1.25; }
.price { font-size: 26px; font-weight: 900; }
.compact-courses .price { font-size: 18px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.tag { padding: 7px 10px; border-radius: 999px; background: var(--panel-2); color: var(--muted); font-size: 12px; font-weight: 800; }
.tag.free { color: white; background: linear-gradient(135deg, var(--brand), var(--gold)); }
.rating-pill { padding: 10px 13px; border-radius: 999px; color: white; background: linear-gradient(135deg, var(--gold), var(--brand)); font-weight: 900; }

.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.filters button { background: var(--panel-2); color: var(--text); box-shadow: none; }

.video-frame {
  width: 100%;
  aspect-ratio: 16/9;
  border: 0;
  border-radius: 8px;
  background: #000;
}

.module-list { display: grid; gap: 12px; }
.module-list.compact { max-width: 920px; }
.module-item {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  align-items: center;
}

.course-hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: start; }
.course-detail-panel { padding: 26px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); box-shadow: var(--shadow); }
.price-action { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin: 24px 0; padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel-2); }

.review-card, .stat-card, .feature-card { padding: 22px; transition: transform .2s ease, box-shadow .2s ease; }
.review-card > *, .stat-card > *, .feature-card > *, .plan-card > *, .payment-card > *, .card > * { position: relative; z-index: 1; }
.review-card:hover, .stat-card:hover, .feature-card:hover { transform: translateY(-5px); box-shadow: 0 24px 70px rgba(15,159,122,.16); }
.stars { color: var(--gold); letter-spacing: 0; font-size: 20px; font-weight: 900; }
.review-card p, .feature-card p, .stat-card p { color: var(--muted); line-height: 1.65; }
.review-card strong, .review-card span { display: block; }
.feature-card span { color: var(--brand); font-weight: 900; }
.stat-card h2 { color: var(--brand); }

.form-wrap { max-width: 560px; margin: 52px auto; padding: 0 18px; }
.form-card { padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); box-shadow: var(--shadow); }
label { display: grid; gap: 8px; margin-bottom: 15px; font-weight: 800; }
input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
textarea { min-height: 130px; resize: vertical; }
.alert { padding: 13px 15px; border-radius: 8px; margin-bottom: 16px; background: rgba(15,159,122,.12); color: var(--brand); font-weight: 800; }

.admin-layout { display: grid; grid-template-columns: 250px 1fr; min-height: 82vh; }
.admin-side { padding: 22px; border-right: 1px solid var(--line); background: var(--panel); }
.admin-side a { display: block; padding: 12px; border-radius: 8px; color: var(--muted); font-weight: 800; }
.admin-side a:hover { background: var(--panel-2); color: var(--text); }
.admin-main { padding: 28px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 14px; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--muted); font-size: 13px; text-transform: uppercase; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }

.pricing-hero { background: linear-gradient(180deg, color-mix(in srgb, var(--panel-2) 70%, transparent), var(--bg)); }
.pricing-grid { align-items: stretch; }
.plan-card { min-height: 560px; padding: 22px; display: flex; flex-direction: column; gap: 13px; }
.plan-card h2 { font-size: clamp(30px, 3vw, 44px); }
.plan-card.featured { border-color: color-mix(in srgb, var(--gold) 70%, var(--line)); transform: translateY(-6px); }
.plan-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.plan-list li { padding: 10px 11px; border-radius: 8px; background: var(--panel-2); color: var(--muted); font-weight: 700; font-size: 14px; }
.plan-card .btn { margin-top: auto; }
.tiny { font-size: 13px; }

.checkout-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch; }
.payment-card { padding: 30px; }
.pay-amount { font-size: clamp(42px, 7vw, 76px); font-weight: 900; line-height: 1; margin: 20px 0; color: var(--brand); }
.upi-box { display: grid; gap: 8px; margin: 18px 0; padding: 16px; border-radius: 8px; background: var(--panel-2); }
.upi-box span { font-size: 24px; font-weight: 900; }
.qr-card img { width: 260px; max-width: 100%; margin: 12px auto; border-radius: 8px; padding: 10px; background: white; }
.payment-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 22px; }
.payment-steps div { padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
.payment-steps strong { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 999px; color: white; background: var(--brand); }
.free-checkout { max-width: 860px; margin: 0 auto; padding: 34px; }

.learn-section { padding-top: 34px; }
.learn-layout { display: grid; grid-template-columns: 360px 1fr; gap: 24px; align-items: start; }
.learn-list { position: sticky; top: 86px; display: grid; gap: 12px; max-height: calc(100vh - 110px); overflow: auto; padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); box-shadow: var(--shadow); }
.learn-module { display: grid; gap: 6px; padding: 13px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.learn-module span { color: var(--muted); font-size: 13px; line-height: 1.45; }
.learn-module.active { border-color: var(--brand); background: color-mix(in srgb, var(--brand) 10%, var(--panel)); }
.learn-player { min-width: 0; }

.profile-mini { display: grid; gap: 6px; padding: 18px; min-width: 260px; }
.profile-mini span { color: var(--muted); }
.policy-page { max-width: 900px; margin: 0 auto; line-height: 1.75; }

.footer {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 24px;
  padding: 44px clamp(18px, 4vw, 64px);
  background: var(--panel);
  border-top: 1px solid var(--line);
}
.footer a { display: block; margin: 9px 0; color: var(--muted); }

@keyframes floatCard {
  0%, 100% { transform: rotateX(10deg) rotateY(-12deg) translateY(0); }
  50% { transform: rotateX(7deg) rotateY(-7deg) translateY(-18px); }
}

@media (max-width: 900px) {
  .nav-toggle { display: block; background: var(--panel-2); color: var(--text); box-shadow: none; }
  .nav {
    position: fixed;
    inset: 70px 14px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: var(--shadow);
  }
  .nav.open { display: flex; }
  .hero { grid-template-columns: 1fr; }
  .market-cube { min-height: 300px; }
  .cube-card { inset: 12px; }
  .grid, .grid.two, .grid.four, .footer, .admin-layout, .course-hero, .checkout-grid, .payment-steps, .learn-layout { grid-template-columns: 1fr; }
  .admin-side { border-right: 0; border-bottom: 1px solid var(--line); }
  .learn-list { position: static; max-height: none; }
  .price-action, .dashboard-head, .support-strip { align-items: stretch; flex-direction: column; }
  .plan-card.featured { transform: none; }
}