/* ═══════════════════════════════════════════════════════════
   ProLearner — Premium Design System v3.0
   Aesthetic: Dark Luxury Futuristic × Glassmorphism × Noise
   Fonts: Clash Display (headings) + Plus Jakarta Sans (body)
          + Hind Siliguri (Bengali)
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Clash+Display:wght@400;500;600;700&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Hind+Siliguri:wght@400;500;600;700&display=swap');

/* ─── CSS Tokens ─── */
:root {
  /* Accent palette */
  --c1: #6ee7ff;
  --c2: #a855f7;
  --c3: #f472b6;
  --gold: #fbbf24;
  --green: #34d399;
  --danger: #f87171;
  --warn: #fb923c;

  /* Gradients */
  --grad: linear-gradient(135deg, #6ee7ff 0%, #a855f7 50%, #f472b6 100%);
  --grad2: linear-gradient(135deg, #6ee7ff, #a855f7);
  --grad3: linear-gradient(135deg, #a855f7, #f472b6);
  --glow: 0 0 40px rgba(110, 231, 255, 0.15);
  --glow2: 0 0 60px rgba(168, 85, 247, 0.2);

  /* Radius */
  --r: 12px;
  --rl: 20px;
  --rxl: 28px;

  /* Transitions */
  --tr: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --tr-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Dark Theme (default) ─── */
[data-theme="dark"] {
  --bg:   #04040a;
  --bg2:  #07071000;
  --bg3:  #0c0c18;
  --bg4:  #10101e;
  --s1:   rgba(255,255,255,0.025);
  --s2:   rgba(255,255,255,0.05);
  --s3:   rgba(255,255,255,0.09);
  --b1:   rgba(255,255,255,0.06);
  --b2:   rgba(255,255,255,0.12);
  --b3:   rgba(255,255,255,0.22);
  --tx:   #f2f0ff;
  --tx2:  rgba(242,240,255,0.55);
  --tx3:  rgba(242,240,255,0.28);
  --nav-bg: rgba(4,4,10,0.82);
  --card-shadow: 0 8px 40px rgba(0,0,0,0.6);
}

/* ─── Light Theme ─── */
[data-theme="light"] {
  --bg:   #f8f7ff;
  --bg2:  #f0eeff;
  --bg3:  #ffffff;
  --bg4:  #fafafe;
  --s1:   rgba(0,0,0,0.025);
  --s2:   rgba(0,0,0,0.04);
  --s3:   rgba(0,0,0,0.08);
  --b1:   rgba(0,0,0,0.07);
  --b2:   rgba(0,0,0,0.12);
  --b3:   rgba(0,0,0,0.22);
  --tx:   #0d0b18;
  --tx2:  rgba(13,11,24,0.55);
  --tx3:  rgba(13,11,24,0.30);
  --nav-bg: rgba(248,247,255,0.88);
  --card-shadow: 0 4px 24px rgba(0,0,0,0.10);
}

/* ─── Purple Theme ─── */
[data-theme="purple"] {
  --bg:   #070412;
  --bg2:  #0c0820;
  --bg3:  #100d2a;
  --bg4:  #130f2e;
  --s1:   rgba(168,85,247,0.05);
  --s2:   rgba(168,85,247,0.09);
  --s3:   rgba(168,85,247,0.15);
  --b1:   rgba(168,85,247,0.12);
  --b2:   rgba(168,85,247,0.22);
  --b3:   rgba(168,85,247,0.35);
  --tx:   #f0e8ff;
  --tx2:  rgba(240,232,255,0.55);
  --tx3:  rgba(240,232,255,0.28);
  --nav-bg: rgba(7,4,18,0.88);
  --card-shadow: 0 8px 40px rgba(168,85,247,0.2);
  --c1: #c084fc;
  --c2: #e879f9;
}

/* ─── Ocean Theme ─── */
[data-theme="ocean"] {
  --bg:   #020d1a;
  --bg2:  #041424;
  --bg3:  #071a2e;
  --bg4:  #091e34;
  --s1:   rgba(14,165,233,0.04);
  --s2:   rgba(14,165,233,0.08);
  --s3:   rgba(14,165,233,0.13);
  --b1:   rgba(14,165,233,0.1);
  --b2:   rgba(14,165,233,0.2);
  --b3:   rgba(14,165,233,0.33);
  --tx:   #e0f7ff;
  --tx2:  rgba(224,247,255,0.55);
  --tx3:  rgba(224,247,255,0.28);
  --nav-bg: rgba(2,13,26,0.88);
  --card-shadow: 0 8px 40px rgba(14,165,233,0.2);
  --c1: #38bdf8;
  --c2: #06b6d4;
  --c3: #34d399;
  --grad: linear-gradient(135deg, #38bdf8, #06b6d4, #34d399);
  --grad2: linear-gradient(135deg, #38bdf8, #06b6d4);
}

/* ─── Forest Theme ─── */
[data-theme="forest"] {
  --bg:   #030d08;
  --bg2:  #071510;
  --bg3:  #0b1c14;
  --bg4:  #0e2018;
  --s1:   rgba(52,211,153,0.04);
  --s2:   rgba(52,211,153,0.08);
  --s3:   rgba(52,211,153,0.13);
  --b1:   rgba(52,211,153,0.1);
  --b2:   rgba(52,211,153,0.2);
  --b3:   rgba(52,211,153,0.33);
  --tx:   #e0fff4;
  --tx2:  rgba(224,255,244,0.55);
  --tx3:  rgba(224,255,244,0.28);
  --nav-bg: rgba(3,13,8,0.88);
  --card-shadow: 0 8px 40px rgba(52,211,153,0.2);
  --c1: #34d399;
  --c2: #10b981;
  --c3: #6ee7b7;
  --gold: #a3e635;
  --grad: linear-gradient(135deg, #34d399, #10b981, #059669);
  --grad2: linear-gradient(135deg, #34d399, #10b981);
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Plus Jakarta Sans', 'Hind Siliguri', sans-serif;
  background: var(--bg);
  color: var(--tx);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  padding-bottom: 72px;
  transition: background 0.4s, color 0.3s;
}
body.lang-bn { font-family: 'Hind Siliguri', 'Plus Jakarta Sans', sans-serif; }

/* ─── Language System ─── */
.bn { display: none !important; }
.en { display: inline !important; }
.lang-bn .bn { display: inline !important; }
.lang-bn .en { display: none !important; }
.lang-bn .bn-block { display: block !important; }
.lang-bn .en-block { display: none !important; }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--b2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--c1); }

/* ─── Noise Texture & Ambient ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* Ambient orbs */
.ambient-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  animation: driftOrb 18s ease-in-out infinite;
}
.orb-1 { width: 600px; height: 600px; background: rgba(110,231,255,0.055); top: -200px; left: -200px; }
.orb-2 { width: 500px; height: 500px; background: rgba(168,85,247,0.065); top: 30%; right: -180px; animation-delay: -6s; animation-duration: 22s; }
.orb-3 { width: 400px; height: 400px; background: rgba(244,114,182,0.045); bottom: -100px; left: 20%; animation-delay: -12s; }
@keyframes driftOrb {
  0%,100% { transform: translate(0,0) scale(1); }
  33%      { transform: translate(40px,-30px) scale(1.05); }
  66%      { transform: translate(-20px,40px) scale(0.96); }
}

/* ─── Navbar ─── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(28px) saturate(1.8);
  -webkit-backdrop-filter: blur(28px) saturate(1.8);
  border-bottom: 1px solid var(--b1);
  transition: var(--tr);
}
.nav-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
  height: 62px;
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Logo */
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; }
.logo-mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: var(--grad);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 800; color: #fff;
  font-family: 'Clash Display', sans-serif;
  box-shadow: 0 4px 16px rgba(110,231,255,0.3);
  flex-shrink: 0;
}
.logo-text {
  font-family: 'Clash Display', sans-serif;
  font-size: 19px;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.3px;
}

/* Nav links */
.nav-center { display: flex; align-items: center; gap: 2px; flex: 1; justify-content: center; }
.nav-link {
  padding: 6px 14px;
  border-radius: 99px;
  text-decoration: none;
  color: var(--tx2);
  font-size: 13px;
  font-weight: 500;
  transition: var(--tr);
  white-space: nowrap;
}
.nav-link:hover { color: var(--tx); background: var(--s2); }
.nav-link.active { color: var(--c1); background: rgba(110,231,255,0.08); }

/* Nav actions */
.nav-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.toggle-btn {
  width: 34px; height: 34px;
  border-radius: 10px;
  border: 1px solid var(--b2);
  background: var(--s1);
  color: var(--tx2);
  cursor: pointer;
  font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  transition: var(--tr);
  font-family: inherit;
}
.toggle-btn:hover { border-color: var(--c1); color: var(--c1); background: rgba(110,231,255,0.06); }
.btn-nav-outline {
  padding: 7px 16px; border-radius: 99px;
  border: 1px solid var(--b2);
  text-decoration: none; color: var(--tx2);
  font-size: 12px; font-weight: 500; transition: var(--tr);
}
.btn-nav-outline:hover { border-color: var(--c1); color: var(--c1); }
.btn-nav-solid {
  padding: 7px 18px; border-radius: 99px;
  background: var(--grad);
  text-decoration: none; color: #fff;
  font-size: 12px; font-weight: 700;
  transition: var(--tr);
  box-shadow: 0 3px 14px rgba(110,231,255,0.25);
}
.btn-nav-solid:hover { opacity: 0.88; transform: translateY(-1px); }

/* User dropdown */
.nav-user { position: relative; }
.user-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--grad);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px; color: #fff;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--tr);
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 3px rgba(110,231,255,0.2);
}
.user-avatar:hover { box-shadow: 0 0 0 2px var(--bg), 0 0 0 3px var(--c1); }
.user-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: var(--bg3);
  border: 1px solid var(--b2);
  border-radius: var(--rl);
  min-width: 210px;
  padding: 8px;
  box-shadow: var(--card-shadow), 0 0 0 1px var(--b1);
  animation: dropIn 0.18s ease;
  z-index: 50;
}
.user-dropdown.open { display: block; }
@keyframes dropIn { from { opacity:0; transform:translateY(-8px) scale(0.98); } to { opacity:1; transform:translateY(0) scale(1); } }
.dd-header {
  padding: 10px 12px 12px;
  border-bottom: 1px solid var(--b1);
  margin-bottom: 6px;
}
.dd-name { font-weight: 700; font-size: 13px; }
.dd-email { font-size: 11px; color: var(--tx3); margin-top: 2px; }
.role-pill {
  display: inline-block;
  font-size: 10px; padding: 2px 8px;
  border-radius: 99px; font-weight: 700; margin-top: 5px;
}
.rp-admin   { background: rgba(251,191,36,0.12); color: var(--gold); border: 1px solid rgba(251,191,36,0.25); }
.rp-premium { background: rgba(110,231,255,0.1); color: var(--c1);  border: 1px solid rgba(110,231,255,0.2); }
.rp-user    { background: var(--s2); color: var(--tx3); border: 1px solid var(--b1); }
.user-dropdown a {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  border-radius: var(--r);
  text-decoration: none; color: var(--tx2);
  font-size: 13px; transition: var(--tr);
}
.user-dropdown a:hover { background: var(--s2); color: var(--tx); }
.dd-upgrade { color: var(--gold) !important; }
.dd-admin   { color: var(--c1) !important; }
.dd-logout  { color: var(--danger) !important; }
.hamburger { display: none; flex-direction: column; gap: 4.5px; background: none; border: none; cursor: pointer; padding: 6px; }
.hamburger span { display: block; width: 20px; height: 1.5px; background: var(--tx2); border-radius: 1px; transition: var(--tr); }

/* ─── Notice Banner ─── */
.notice-banner {
  margin-top: 62px;
  background: linear-gradient(90deg, rgba(110,231,255,0.07), rgba(168,85,247,0.07));
  border-bottom: 1px solid rgba(110,231,255,0.12);
  padding: 9px 24px;
  display: flex; align-items: center; gap: 10px;
  font-size: 12.5px; color: var(--tx2);
}
.notice-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--c1); flex-shrink: 0; animation: npulse 2s infinite; }
@keyframes npulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(0.7)} }
.notice-link { color: var(--c1); text-decoration: none; font-weight: 600; margin-left: 4px; }
.notice-link:hover { text-decoration: underline; }
.notice-close { margin-left: auto; background: none; border: none; color: var(--tx3); cursor: pointer; font-size: 14px; padding: 2px 6px; transition: var(--tr); }
.notice-close:hover { color: var(--tx); }

/* ─── Main ─── */
.main-content { padding-top: 62px; min-height: calc(100vh - 62px); position: relative; z-index: 1; }

/* ─── Section ─── */
.section { padding: 72px 24px; max-width: 1300px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 52px; }
.sec-tag {
  display: inline-block;
  font-size: 10.5px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--c1); margin-bottom: 12px;
}
.sec-title {
  font-family: 'Clash Display', sans-serif;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700; letter-spacing: -1px; margin-bottom: 12px;
}
.sec-sub { color: var(--tx2); font-size: 15px; max-width: 520px; margin: 0 auto; }

/* ─── Hero ─── */
.hero {
  position: relative;
  padding: 96px 24px 76px;
  text-align: center;
  overflow: hidden;
}
.hero-inner { max-width: 720px; margin: 0 auto; position: relative; z-index: 1; }
.hero-live-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(110,231,255,0.07);
  border: 1px solid rgba(110,231,255,0.18);
  padding: 5px 14px; border-radius: 99px;
  font-size: 11px; font-weight: 600; color: var(--c1);
  margin-bottom: 24px;
  animation: fadeUp 0.5s ease both;
}
.live-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--c1); animation: npulse 2s infinite; }
.hero-title {
  font-family: 'Clash Display', sans-serif;
  font-size: clamp(38px, 6.5vw, 72px);
  font-weight: 700; line-height: 1.04; letter-spacing: -2.5px;
  margin-bottom: 18px;
  animation: fadeUp 0.5s ease 0.08s both;
}
.hero-title .grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: clamp(14px, 1.8vw, 17px);
  color: var(--tx2); line-height: 1.7;
  max-width: 520px; margin: 0 auto 36px;
  animation: fadeUp 0.5s ease 0.16s both;
}
.hero-ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; animation: fadeUp 0.5s ease 0.24s both; }

/* ─── Buttons ─── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 99px;
  background: var(--grad); color: #fff;
  font-size: 14px; font-weight: 700;
  text-decoration: none; border: none; cursor: pointer;
  transition: var(--tr);
  box-shadow: 0 4px 20px rgba(110,231,255,0.22), inset 0 1px 0 rgba(255,255,255,0.2);
  font-family: inherit;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(110,231,255,0.35); opacity: 0.92; }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px; border-radius: 99px;
  background: var(--s2); color: var(--tx);
  border: 1px solid var(--b2);
  font-size: 14px; font-weight: 500;
  text-decoration: none; cursor: pointer;
  transition: var(--tr); font-family: inherit;
}
.btn-secondary:hover { background: var(--s3); border-color: var(--b3); color: var(--c1); transform: translateY(-1px); }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 18px; border-radius: 99px;
  background: transparent; color: var(--tx2);
  border: 1px solid var(--b1);
  font-size: 13px; font-weight: 500;
  text-decoration: none; cursor: pointer;
  transition: var(--tr); font-family: inherit;
}
.btn-ghost:hover { border-color: var(--b3); color: var(--tx); }
.btn-danger-soft {
  background: rgba(248,113,113,0.1); color: var(--danger);
  border: 1px solid rgba(248,113,113,0.25);
  border-radius: var(--r); padding: 7px 14px;
  font-size: 12px; font-weight: 600; cursor: pointer;
  font-family: inherit; transition: var(--tr);
}
.btn-danger-soft:hover { background: rgba(248,113,113,0.18); }
.btn-success-soft {
  background: rgba(52,211,153,0.1); color: var(--green);
  border: 1px solid rgba(52,211,153,0.25);
  border-radius: var(--r); padding: 7px 14px;
  font-size: 12px; font-weight: 600; cursor: pointer;
  font-family: inherit; transition: var(--tr);
}
.btn-success-soft:hover { background: rgba(52,211,153,0.18); }
.btn-full {
  width: 100%; padding: 13px; border-radius: 99px;
  border: none; background: var(--grad); color: #fff;
  font-size: 15px; font-weight: 700; cursor: pointer;
  transition: var(--tr); font-family: inherit;
  box-shadow: 0 4px 20px rgba(110,231,255,0.2);
}
.btn-full:hover { opacity: 0.9; transform: translateY(-1px); }

/* ─── Stats Bar ─── */
.stats-bar {
  max-width: 860px; margin: 56px auto 0;
  display: grid; grid-template-columns: repeat(4,1fr);
  border: 1px solid var(--b1); border-radius: var(--rl);
  overflow: hidden;
  background: var(--b1);
  gap: 1px;
  animation: fadeUp 0.5s ease 0.3s both;
}
.stat-item { background: var(--bg3); padding: 22px; text-align: center; }
.stat-value {
  font-family: 'Clash Display', sans-serif;
  font-size: 28px; font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label { font-size: 10.5px; color: var(--tx3); margin-top: 4px; text-transform: uppercase; letter-spacing: 1px; }

/* ─── Cards ─── */
.glass-card {
  background: var(--s1);
  backdrop-filter: blur(12px);
  border: 1px solid var(--b1);
  border-radius: var(--rl);
  transition: var(--tr);
}
.glass-card:hover { border-color: var(--b2); box-shadow: var(--card-shadow); transform: translateY(-2px); }
.card {
  background: var(--bg3);
  border: 1px solid var(--b1);
  border-radius: var(--rl);
  padding: 24px;
  transition: var(--tr);
}
.card:hover { border-color: var(--b2); box-shadow: var(--card-shadow); }
.card-glow {
  background: var(--bg3);
  border: 1px solid var(--b1);
  border-radius: var(--rl);
  padding: 24px;
  transition: var(--tr);
}
.card-glow:hover {
  border-color: rgba(110,231,255,0.25);
  box-shadow: 0 0 0 1px rgba(110,231,255,0.08), var(--card-shadow);
  transform: translateY(-3px);
}

/* ─── Feature Cards ─── */
.features-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.feature-card {
  background: var(--s1); border: 1px solid var(--b1);
  border-radius: var(--rl); padding: 26px;
  transition: var(--tr);
}
.feature-card:hover { border-color: var(--b2); background: var(--s2); transform: translateY(-2px); }
.feature-icon-wrap {
  width: 46px; height: 46px; border-radius: 14px;
  background: var(--s2); border: 1px solid var(--b1);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 16px;
}
.feature-title { font-family: 'Clash Display', sans-serif; font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.feature-desc { color: var(--tx2); font-size: 13px; line-height: 1.7; }

/* ─── Course Cards ─── */
.courses-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }
.course-card {
  background: var(--bg3); border: 1px solid var(--b1);
  border-radius: var(--rl); overflow: hidden;
  transition: var(--tr); text-decoration: none; color: var(--tx); display: block;
}
.course-card:hover { border-color: rgba(110,231,255,0.2); transform: translateY(-4px); box-shadow: 0 16px 48px rgba(110,231,255,0.08), var(--card-shadow); }
.course-thumb {
  aspect-ratio: 16/9; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.course-thumb-bg { font-size: 52px; }
.course-thumb-1 { background: linear-gradient(135deg, rgba(110,231,255,0.07), rgba(168,85,247,0.07)); }
.course-thumb-2 { background: linear-gradient(135deg, rgba(168,85,247,0.07), rgba(244,114,182,0.07)); }
.course-thumb-3 { background: linear-gradient(135deg, rgba(251,191,36,0.07), rgba(52,211,153,0.07)); }
.course-thumb-4 { background: linear-gradient(135deg, rgba(244,114,182,0.07), rgba(110,231,255,0.07)); }
.course-badge {
  position: absolute; top: 10px; right: 10px;
  padding: 3px 9px; border-radius: 99px;
  font-size: 10px; font-weight: 700;
}
.badge-free { background: rgba(52,211,153,0.12); color: var(--green); border: 1px solid rgba(52,211,153,0.25); }
.badge-premium { background: rgba(251,191,36,0.1); color: var(--gold); border: 1px solid rgba(251,191,36,0.22); }
.enrolled-badge {
  position: absolute; top: 10px; left: 10px;
  background: rgba(52,211,153,0.12); color: var(--green);
  border: 1px solid rgba(52,211,153,0.25);
  font-size: 10px; font-weight: 700; padding: 3px 9px; border-radius: 99px;
}
.course-body { padding: 18px; }
.course-cat { font-size: 10px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; color: var(--c1); margin-bottom: 7px; }
.course-title { font-family: 'Clash Display', sans-serif; font-size: 16px; font-weight: 600; margin-bottom: 10px; line-height: 1.3; }
.course-meta { display: flex; gap: 14px; color: var(--tx3); font-size: 11px; flex-wrap: wrap; }
.course-meta span { display: flex; align-items: center; gap: 4px; }
.prog-wrap { margin-top: 12px; }
.prog-bar { height: 3px; background: var(--b1); border-radius: 2px; overflow: hidden; }
.prog-fill { height: 100%; border-radius: 2px; background: var(--grad2); transition: width 0.8s ease; }
.prog-text { font-size: 10.5px; color: var(--tx3); margin-top: 5px; }

/* ─── Pricing ─── */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; max-width: 860px; margin: 0 auto; }
.price-card {
  background: var(--bg3); border: 1px solid var(--b1);
  border-radius: var(--rxl); padding: 32px 26px; position: relative; transition: var(--tr);
}
.price-card.featured {
  border-color: rgba(110,231,255,0.25);
  background: linear-gradient(135deg, rgba(110,231,255,0.04), rgba(168,85,247,0.06));
  box-shadow: 0 0 0 1px rgba(110,231,255,0.12), 0 8px 40px rgba(110,231,255,0.1);
}
.price-popular-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--grad); color: #fff;
  font-size: 10px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; padding: 4px 14px; border-radius: 99px;
  white-space: nowrap;
}
.price-name { font-size: 12px; font-weight: 600; color: var(--tx2); text-transform: uppercase; letter-spacing: 1.2px; margin-bottom: 16px; }
.price-amount { font-family: 'Clash Display', sans-serif; font-size: 52px; font-weight: 700; line-height: 1; margin-bottom: 4px; }
.price-amount small { font-size: 20px; font-weight: 400; color: var(--tx2); }
.price-period { font-size: 12px; color: var(--tx3); margin-bottom: 26px; }
.price-list { list-style: none; margin-bottom: 26px; }
.price-list li { padding: 8px 0; font-size: 13px; color: var(--tx2); display: flex; gap: 10px; align-items: flex-start; border-bottom: 1px solid var(--b1); }
.price-list li:last-child { border: none; }
.pli-check { color: var(--green); flex-shrink: 0; margin-top: 1px; }
.pli-cross { color: var(--tx3); flex-shrink: 0; }

/* ─── Dashboard ─── */
.stat-cards-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; margin-bottom: 26px; }
.stat-card-mini {
  background: var(--bg3); border: 1px solid var(--b1);
  border-radius: var(--rl); padding: 18px; transition: var(--tr);
}
.stat-card-mini:hover { border-color: var(--b2); }
.scm-icon { font-size: 22px; margin-bottom: 10px; }
.scm-val { font-family: 'Clash Display', sans-serif; font-size: 26px; font-weight: 700; }
.scm-label { font-size: 10.5px; color: var(--tx3); text-transform: uppercase; letter-spacing: 0.8px; margin-top: 3px; }

/* XP bar */
.xp-bar-track { background: var(--b1); border-radius: 4px; height: 6px; margin-top: 8px; overflow: hidden; }
.xp-bar-fill { height: 100%; background: var(--grad2); border-radius: 4px; transition: width 1s ease; }

/* Streak */
.streak-badge { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: #f97316; font-weight: 700; }
.streak-badge .flame { animation: flicker 1.5s ease-in-out infinite alternate; }
@keyframes flicker { from { transform: scale(1) rotate(-2deg); } to { transform: scale(1.12) rotate(2deg); } }

/* ─── Leaderboard ─── */
.lb-table { background: var(--bg3); border: 1px solid var(--b1); border-radius: var(--rl); overflow: hidden; }
.lb-header { padding: 18px 22px; border-bottom: 1px solid var(--b1); display: flex; justify-content: space-between; align-items: center; }
.lb-header strong { font-family: 'Clash Display', sans-serif; font-size: 15px; font-weight: 600; }
.lb-row { display: flex; align-items: center; gap: 14px; padding: 13px 22px; border-bottom: 1px solid var(--b1); transition: var(--tr); }
.lb-row:last-child { border: none; }
.lb-row:hover { background: var(--s2); }
.lb-rank { font-family: 'Clash Display', sans-serif; font-size: 16px; font-weight: 700; width: 30px; text-align: center; }
.rank-1 { color: var(--gold); }
.rank-2 { color: #9ca3af; }
.rank-3 { color: #cd7f32; }
.lb-av { width: 34px; height: 34px; border-radius: 50%; background: var(--grad); display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; color: #fff; flex-shrink: 0; }
.lb-name { flex: 1; font-weight: 500; font-size: 14px; }
.lb-xp { font-family: 'Clash Display', sans-serif; font-weight: 700; color: var(--c1); font-size: 14px; }

/* ─── Auth ─── */
.auth-page { min-height: calc(100vh - 62px); display: flex; align-items: center; justify-content: center; padding: 40px 24px; }
.auth-card {
  background: var(--bg3); border: 1px solid var(--b1);
  border-radius: var(--rxl); padding: 44px;
  width: 100%; max-width: 420px;
  box-shadow: var(--card-shadow);
}
.auth-logo-wrap { text-align: center; margin-bottom: 6px; }
.auth-logo-icon { width: 52px; height: 52px; border-radius: 16px; background: var(--grad); display: inline-flex; align-items: center; justify-content: center; font-size: 24px; }
.auth-title { font-family: 'Clash Display', sans-serif; font-size: 24px; font-weight: 700; text-align: center; margin-bottom: 5px; }
.auth-sub { color: var(--tx2); font-size: 13px; text-align: center; margin-bottom: 32px; }
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12px; font-weight: 600; margin-bottom: 7px; color: var(--tx2); letter-spacing: 0.3px; }
.form-control {
  width: 100%;
  background: var(--s2); border: 1px solid var(--b2);
  border-radius: var(--r); padding: 11px 14px;
  color: var(--tx); font-size: 14px; outline: none;
  transition: var(--tr); font-family: inherit;
}
.form-control:focus { border-color: var(--c1); background: var(--bg3); box-shadow: 0 0 0 3px rgba(110,231,255,0.08); }
.form-control::placeholder { color: var(--tx3); }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 88px; }
.form-error { color: var(--danger); font-size: 11.5px; margin-top: 4px; }
.auth-divider { text-align: center; color: var(--tx3); font-size: 12px; margin: 18px 0; position: relative; }
.auth-divider::before, .auth-divider::after { content:''; position:absolute; top:50%; width:calc(50% - 18px); height:1px; background:var(--b1); }
.auth-divider::before { left: 0; } .auth-divider::after { right: 0; }
.auth-link { text-align: center; font-size: 13px; color: var(--tx2); margin-top: 18px; }
.auth-link a { color: var(--c1); text-decoration: none; font-weight: 600; }

/* Alerts */
.alert { padding: 11px 15px; border-radius: var(--r); font-size: 13px; margin-bottom: 18px; }
.alert-error   { background: rgba(248,113,113,0.08); border: 1px solid rgba(248,113,113,0.25); color: #fca5a5; }
.alert-success { background: rgba(52,211,153,0.08); border: 1px solid rgba(52,211,153,0.22); color: #6ee7b7; }
.alert-info    { background: rgba(110,231,255,0.07); border: 1px solid rgba(110,231,255,0.18); color: var(--c1); }

/* Pills / badges */
.pill { padding: 3px 10px; border-radius: 99px; font-size: 11px; font-weight: 700; display: inline-block; }
.pill-blue   { background: rgba(110,231,255,0.1);  color: var(--c1);    border: 1px solid rgba(110,231,255,0.2); }
.pill-purple { background: rgba(168,85,247,0.1);   color: var(--c2);    border: 1px solid rgba(168,85,247,0.2); }
.pill-green  { background: rgba(52,211,153,0.1);   color: var(--green); border: 1px solid rgba(52,211,153,0.22); }
.pill-gold   { background: rgba(251,191,36,0.1);   color: var(--gold);  border: 1px solid rgba(251,191,36,0.22); }
.pill-red    { background: rgba(248,113,113,0.1);  color: var(--danger);border: 1px solid rgba(248,113,113,0.22); }
.pill-gray   { background: var(--s2); color: var(--tx3); border: 1px solid var(--b1); }
.pill-admin  { background: rgba(251,191,36,0.1); color: var(--gold); border: 1px solid rgba(251,191,36,0.25); }
.pill-premium{ background: rgba(110,231,255,0.08); color: var(--c1); border: 1px solid rgba(110,231,255,0.2); }

/* Badges grid */
.badges-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.badge-item {
  background: var(--s1); border: 1px solid var(--b1);
  border-radius: var(--r); padding: 11px 15px;
  display: flex; align-items: center; gap: 10px;
  font-size: 12px; transition: var(--tr);
}
.badge-item.earned { border-color: rgba(251,191,36,0.25); background: rgba(251,191,36,0.04); }
.badge-item:hover { border-color: var(--b2); }

/* ─── Bottom Nav ─── */
.bottom-nav {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 999;
  background: var(--nav-bg);
  backdrop-filter: blur(24px);
  border-top: 1px solid var(--b1);
  padding: 6px 0 10px;
  justify-content: space-around;
}
.bnav-item { display: flex; flex-direction: column; align-items: center; gap: 2px; text-decoration: none; color: var(--tx3); font-size: 10px; padding: 4px 12px; border-radius: var(--r); transition: var(--tr); }
.bnav-item.active, .bnav-item:hover { color: var(--c1); }
.bnav-icon { font-size: 19px; }
.bnav-label { display: block; }

/* ─── Popup ─── */
.popup-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex; align-items: center; justify-content: center; padding: 20px;
  animation: fadeIn 0.25s ease;
}
.popup-modal {
  background: var(--bg3); border: 1px solid var(--b2);
  border-radius: var(--rxl); padding: 36px;
  max-width: 420px; width: 100%; text-align: center;
  animation: scaleIn 0.25s cubic-bezier(0.34,1.56,0.64,1);
  box-shadow: var(--card-shadow), 0 0 60px rgba(110,231,255,0.1);
}
@keyframes scaleIn { from { opacity:0; transform:scale(0.92); } to { opacity:1; transform:scale(1); } }
.popup-close {
  display: block; width: 100%; padding: 10px;
  background: var(--s2); border: 1px solid var(--b1);
  border-radius: var(--r); color: var(--tx2);
  cursor: pointer; font-size: 13px; margin-top: 10px; font-family: inherit;
  transition: var(--tr);
}
.popup-close:hover { background: var(--s3); }

/* ─── PWA Prompt ─── */
.pwa-prompt { position: fixed; bottom: 82px; left: 14px; right: 14px; z-index: 900; animation: slideUp 0.4s ease; }
@keyframes slideUp { from { opacity:0; transform:translateY(16px); } to { opacity:1; transform:translateY(0); } }
.pwa-content { background: var(--bg3); border: 1px solid var(--b2); border-radius: var(--rl); padding: 14px 16px; display: flex; align-items: center; gap: 14px; box-shadow: var(--card-shadow); }
.pwa-icon { font-size: 26px; flex-shrink: 0; }
.pwa-content > div { flex: 1; }
.pwa-content strong { display: block; font-size: 13px; font-weight: 700; }
.pwa-content small { font-size: 11px; color: var(--tx2); }
.pwa-install-btn { padding: 8px 16px; border-radius: 99px; background: var(--grad); border: none; color: #fff; font-weight: 700; font-size: 12px; cursor: pointer; flex-shrink: 0; }
.pwa-close { background: none; border: none; color: var(--tx3); cursor: pointer; font-size: 18px; flex-shrink: 0; }

/* ─── Floating AI Button ─── */
.fab-ai {
  position: fixed; bottom: 84px; right: 18px;
  width: 50px; height: 50px; border-radius: 50%;
  background: var(--grad); border: none; color: #fff;
  font-size: 20px; cursor: pointer;
  box-shadow: 0 4px 20px rgba(110,231,255,0.35), 0 0 0 4px rgba(110,231,255,0.08);
  z-index: 800; transition: var(--tr);
  display: flex; align-items: center; justify-content: center;
  text-decoration: none;
  animation: fabFloat 3s ease-in-out infinite;
}
@keyframes fabFloat { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-4px)} }
.fab-ai:hover { transform: scale(1.1) translateY(-2px) !important; box-shadow: 0 8px 30px rgba(110,231,255,0.5); }
@media(min-width:769px) { .fab-ai { bottom: 26px; } }

/* ─── Skeleton ─── */
.skeleton { background: linear-gradient(90deg, var(--s1) 25%, var(--s2) 50%, var(--s1) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--r); }
@keyframes shimmer { 0%{background-position:-200% 0} 100%{background-position:200% 0} }

/* ─── Animations ─── */
@keyframes fadeUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }
.fade-up { animation: fadeUp 0.5s ease both; }
.fade-up-1 { animation-delay: 0.08s; }
.fade-up-2 { animation-delay: 0.16s; }
.fade-up-3 { animation-delay: 0.24s; }
.fade-up-4 { animation-delay: 0.32s; }

/* ─── Utilities ─── */
.container { max-width: 1300px; margin: 0 auto; padding: 0 24px; }
.text-grad { background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.text-c1 { color: var(--c1) !important; }
.text-muted { color: var(--tx2); }
.text-dim { color: var(--tx3); }
.fw-clash { font-family: 'Clash Display', sans-serif; }
.mt-1{margin-top:6px} .mt-2{margin-top:12px} .mt-3{margin-top:20px} .mt-4{margin-top:28px} .mt-5{margin-top:40px}
.mb-1{margin-bottom:6px} .mb-2{margin-bottom:12px} .mb-3{margin-bottom:20px} .mb-4{margin-bottom:28px}
.gap-2{gap:8px} .gap-3{gap:12px} .gap-4{gap:18px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.flex{display:flex} .items-center{align-items:center} .justify-between{justify-content:space-between} .flex-wrap{flex-wrap:wrap}
.w-full{width:100%} .hidden{display:none!important}
.rounded-full { border-radius: 99px; }
.divider { height: 1px; background: var(--b1); margin: 20px 0; }

/* ─── AI Chat specific ─── */
.chat-bubble-ai {
  background: var(--s2); border: 1px solid var(--b1);
  border-radius: 4px var(--rl) var(--rl) var(--rl);
  padding: 13px 16px; max-width: 84%;
  font-size: 14px; line-height: 1.7; color: var(--tx);
}
.chat-bubble-user {
  background: var(--grad); color: #fff;
  border-radius: var(--rl) 4px var(--rl) var(--rl);
  padding: 12px 16px; max-width: 80%;
  font-size: 14px; line-height: 1.7;
}
.chip-btn {
  padding: 6px 13px; border-radius: 99px;
  background: var(--s2); border: 1px solid var(--b1);
  color: var(--tx2); font-size: 12px; cursor: pointer;
  transition: var(--tr); font-family: inherit;
}
.chip-btn:hover { border-color: var(--c1); color: var(--c1); background: rgba(110,231,255,0.05); }
.typing-dot { display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--tx3);animation:tdot 1.2s infinite; }
.typing-dot:nth-child(2){animation-delay:0.2s} .typing-dot:nth-child(3){animation-delay:0.4s}
@keyframes tdot { 0%,80%,100%{opacity:0;transform:scale(0.7)} 40%{opacity:1;transform:scale(1)} }

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .nav-center { display: none; }
  .hamburger { display: flex; }
  .bottom-nav { display: flex; }
  .btn-nav-outline, .btn-nav-solid { display: none; }
  body { padding-bottom: 70px; }
  .stats-bar { grid-template-columns: repeat(2,1fr); }
  .grid-2, .grid-3 { grid-template-columns: 1fr !important; }
  .auth-card { padding: 28px 20px; }
  .section { padding: 52px 16px; }
  .hero { padding: 72px 16px 56px; }
}
@media (max-width: 480px) {
  .courses-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .stat-cards-row { grid-template-columns: repeat(2, 1fr); }
}