/*
Theme Name: Happy Learning - Game Edition
Theme URI: https://happylearning.in
Author: Happy Learning Team
Description: Epic gamified Social Science learning platform for students Grades 7–10. Bilingual English & Tamil. Video-game UI.
Version: 2.0.0
Requires at least: 6.0
Requires PHP: 8.0
Text Domain: happy-learning
*/

/* ============================================================
   GOOGLE FONTS
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&family=Noto+Sans+Tamil:wght@400;600;700;800&display=swap');

/* ============================================================
   CSS VARIABLES — GAME THEME
   ============================================================ */
:root {
  /* Game Palette */
  --g-green:        #00C853;
  --g-green-dark:   #00952F;
  --g-green-glow:   rgba(0,200,83,0.35);
  --g-purple:       #7C3AED;
  --g-purple-dark:  #5B21B6;
  --g-gold:         #FFD700;
  --g-gold-dark:    #E5AC00;
  --g-blue:         #3B82F6;
  --g-orange:       #F97316;
  --g-red:          #EF4444;
  --g-pink:         #EC4899;

  /* Subject Colors */
  --s-history:    #F59E0B;
  --s-geo:        #10B981;
  --s-civics:     #8B5CF6;
  --s-economics:  #EF4444;

  /* Dark BG */
  --bg-dark:      #0A0E1A;
  --bg-card:      #131929;
  --bg-card2:     #1A2237;
  --bg-card3:     #1F2A42;
  --border-glow:  rgba(0,200,83,0.2);
  --border-dim:   rgba(255,255,255,0.08);

  /* Text */
  --t-white:    #F0F4FF;
  --t-muted:    #94A3B8;
  --t-dim:      #4B5563;

  /* Fonts */
  --font:       'Nunito', 'Segoe UI', sans-serif;
  --font-tamil: 'Noto Sans Tamil', sans-serif;

  /* Spacing */
  --sp-xs: 4px;  --sp-sm: 8px;  --sp-md: 16px;
  --sp-lg: 24px; --sp-xl: 32px; --sp-2xl: 48px;

  /* Radius */
  --r-sm: 8px; --r-md: 14px; --r-lg: 20px;
  --r-xl: 28px; --r-pill: 9999px;

  /* Shadows / Glows */
  --glow-green:  0 0 20px rgba(0,200,83,0.4), 0 4px 16px rgba(0,200,83,0.2);
  --glow-purple: 0 0 20px rgba(124,58,237,0.4);
  --glow-gold:   0 0 20px rgba(255,215,0,0.4);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);

  --trans: all 0.22s cubic-bezier(0.4,0,0.2,1);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--t-white);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

body.lang-tamil { font-family: var(--font-tamil), var(--font); }

img { max-width: 100%; height: auto; display: block; }
a { color: var(--g-green); text-decoration: none; }
button, input, select, textarea { font-family: inherit; }
ul { list-style: none; }

/* ============================================================
   STARFIELD BACKGROUND
   ============================================================ */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(124,58,237,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(0,200,83,0.06) 0%, transparent 40%),
    radial-gradient(ellipse at 60% 80%, rgba(59,130,246,0.06) 0%, transparent 40%),
    var(--bg-dark);
  pointer-events: none;
}

/* ============================================================
   WRAPPER
   ============================================================ */
.hl-wrapper {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.hl-page { display: none; min-height: 100vh; padding-bottom: 84px; }
.hl-page.active { display: block; animation: pageIn 0.3s ease; }

@keyframes pageIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   TOPBAR
   ============================================================ */
.hl-topbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px var(--sp-md);
  background: rgba(10,14,26,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dim);
}

.hl-topbar-title {
  font-size: 17px; font-weight: 900;
  color: var(--t-white);
  letter-spacing: 0.3px;
}

.hl-back-btn {
  width: 38px; height: 38px;
  border-radius: var(--r-sm);
  background: var(--bg-card2);
  border: 1px solid var(--border-dim);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: var(--t-white);
  transition: var(--trans);
}
.hl-back-btn:hover { background: var(--bg-card3); border-color: var(--g-green); }

.hl-xp-chip {
  display: flex; align-items: center; gap: 5px;
  background: linear-gradient(135deg, rgba(255,215,0,0.15), rgba(229,172,0,0.1));
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: var(--r-pill);
  padding: 5px 12px;
  font-weight: 900; font-size: 14px;
  color: var(--g-gold);
}

/* ============================================================
   PAGE 1: LOGIN / HOME  — GAME HERO
   ============================================================ */
.hl-login-page {
  min-height: 100vh;
  display: flex; flex-direction: column; align-items: center;
  padding: 0 var(--sp-md) var(--sp-xl);
  background:
    linear-gradient(180deg,
      rgba(0,200,83,0.04) 0%,
      transparent 40%,
      rgba(124,58,237,0.04) 100%
    );
}

/* Hero section */
.hl-hero-section {
  width: 100%;
  text-align: center;
  padding: var(--sp-xl) 0 var(--sp-lg);
  position: relative;
}

/* Logo */
.hl-logo-wrap {
  display: flex; flex-direction: column; align-items: center;
  margin-bottom: var(--sp-md);
}

.hl-logo-icon {
  font-size: 52px;
  filter: drop-shadow(0 0 16px rgba(0,200,83,0.6));
  animation: floatLogo 3s ease-in-out infinite;
  line-height: 1;
  margin-bottom: 10px;
}

@keyframes floatLogo {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50%       { transform: translateY(-8px) rotate(2deg); }
}

.hl-logo-title {
  font-size: 34px; font-weight: 900;
  background: linear-gradient(135deg, var(--g-green) 0%, #00E676 50%, var(--g-gold) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
  line-height: 1.1;
  filter: drop-shadow(0 0 8px rgba(0,200,83,0.3));
}

.hl-logo-sub {
  font-size: 13px; font-weight: 700;
  color: var(--t-muted);
  margin-top: 4px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* Hero image card */
.hl-hero-img-card {
  width: 100%; max-width: 320px;
  margin: 0 auto var(--sp-lg);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 2px solid rgba(0,200,83,0.3);
  box-shadow: 0 0 40px rgba(0,200,83,0.15), 0 16px 40px rgba(0,0,0,0.5);
  position: relative;
}

.hl-hero-img-card::before {
  content: '';
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, transparent 60%, rgba(0,200,83,0.1) 100%);
  pointer-events: none;
}

.hl-hero-img-card img { width: 100%; object-fit: cover; }

/* Level badge */
.hl-level-badge {
  position: absolute; top: 12px; right: 12px; z-index: 2;
  background: linear-gradient(135deg, var(--g-gold), var(--g-gold-dark));
  border-radius: var(--r-pill);
  padding: 4px 12px;
  font-size: 11px; font-weight: 900;
  color: #1A1A1A;
  box-shadow: var(--glow-gold);
}

/* Language selector */
.hl-lang-card {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--r-lg);
  padding: var(--sp-md);
  margin-bottom: var(--sp-md);
}

.hl-lang-label {
  font-size: 10px; font-weight: 900;
  color: var(--t-muted);
  text-transform: uppercase; letter-spacing: 1.5px;
  margin-bottom: var(--sp-sm);
}

.hl-lang-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.hl-lang-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 13px 16px;
  border-radius: var(--r-md);
  border: 2px solid var(--border-dim);
  background: var(--bg-card2);
  cursor: pointer;
  font-size: 14px; font-weight: 800;
  color: var(--t-muted);
  transition: var(--trans);
  font-family: inherit;
}

.hl-lang-btn .lcheck {
  width: 20px; height: 20px; border-radius: 5px;
  border: 2px solid var(--border-dim);
  background: var(--bg-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; transition: var(--trans);
}

.hl-lang-btn.active {
  border-color: var(--g-green);
  color: var(--g-green);
  background: rgba(0,200,83,0.08);
  box-shadow: 0 0 12px rgba(0,200,83,0.12);
}
.hl-lang-btn.active .lcheck {
  background: var(--g-green); border-color: var(--g-green); color: #000;
}

/* Login buttons */
.hl-login-btns { width: 100%; display: flex; flex-direction: column; gap: 10px; }

/* ---- GAME BUTTONS ---- */
.hl-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 16px 24px;
  border-radius: var(--r-md);
  border: none; cursor: pointer;
  font-size: 16px; font-weight: 800; font-family: inherit;
  transition: var(--trans);
  position: relative; overflow: hidden;
  letter-spacing: 0.3px;
}

.hl-btn::before {
  content: '';
  position: absolute; top: 0; left: -100%; width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
  transition: left 0.5s;
}
.hl-btn:hover::before { left: 150%; }
.hl-btn:active { transform: scale(0.97); }

.hl-btn-green {
  background: linear-gradient(135deg, var(--g-green) 0%, var(--g-green-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0,200,83,0.35);
  border: 1px solid rgba(255,255,255,0.15);
}
.hl-btn-green:hover { box-shadow: var(--glow-green); transform: translateY(-2px); }

.hl-btn-google {
  background: var(--bg-card2);
  color: var(--t-white);
  border: 2px solid var(--border-dim);
}
.hl-btn-google:hover { border-color: var(--g-green); }

.hl-btn-outline {
  background: transparent;
  color: var(--g-green);
  border: 2px solid rgba(0,200,83,0.4);
}
.hl-btn-outline:hover { background: rgba(0,200,83,0.08); border-color: var(--g-green); }

.hl-btn-ghost {
  background: transparent;
  color: var(--t-muted);
  font-size: 14px;
  padding: 10px;
}
.hl-btn-ghost:hover { color: var(--t-white); }

.hl-btn-purple {
  background: linear-gradient(135deg, var(--g-purple), var(--g-purple-dark));
  color: #fff;
  box-shadow: 0 4px 20px rgba(124,58,237,0.35);
}
.hl-btn-purple:hover { box-shadow: var(--glow-purple); transform: translateY(-2px); }

.hl-btn-gold {
  background: linear-gradient(135deg, var(--g-gold), var(--g-gold-dark));
  color: #1A1A1A;
  box-shadow: 0 4px 20px rgba(255,215,0,0.3);
  font-weight: 900;
}

.hl-btn-sm { padding: 10px 18px; font-size: 14px; }

/* ============================================================
   FORM CARD
   ============================================================ */
.hl-form-wrap {
  width: 100%;
  padding: var(--sp-md);
  min-height: 100vh;
  display: flex; flex-direction: column;
  background: var(--bg-dark);
}

.hl-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--r-xl);
  padding: var(--sp-xl) var(--sp-lg);
  width: 100%;
  box-shadow: var(--shadow-card);
  margin-bottom: var(--sp-md);
}

.hl-form-head { margin-bottom: var(--sp-lg); }
.hl-form-head h2 {
  font-size: 24px; font-weight: 900; color: var(--t-white);
  margin-bottom: 4px;
}
.hl-form-head p { font-size: 13px; color: var(--t-muted); }

.hl-field { margin-bottom: var(--sp-md); }
.hl-field label {
  display: block; font-size: 12px; font-weight: 800;
  color: var(--t-muted); margin-bottom: 6px;
  text-transform: uppercase; letter-spacing: 0.8px;
}

.hl-field input,
.hl-field select {
  width: 100%; padding: 14px 16px;
  background: var(--bg-card2);
  border: 2px solid var(--border-dim);
  border-radius: var(--r-md);
  font-size: 15px; font-family: inherit;
  color: var(--t-white);
  outline: none; transition: var(--trans);
}
.hl-field input::placeholder { color: var(--t-dim); }
.hl-field input:focus, .hl-field select:focus {
  border-color: var(--g-green);
  background: var(--bg-card3);
  box-shadow: 0 0 0 3px rgba(0,200,83,0.12);
}
.hl-field select option { background: var(--bg-card2); }

.hl-field .ferr {
  display: none; color: #F87171;
  font-size: 11px; font-weight: 700;
  margin-top: 5px;
}
.hl-field.has-err input, .hl-field.has-err select { border-color: #EF4444; }
.hl-field.has-err .ferr { display: block; }

/* Divider */
.hl-divider {
  display: flex; align-items: center; gap: 12px;
  color: var(--t-dim); font-size: 12px; font-weight: 700;
  margin: var(--sp-md) 0;
}
.hl-divider::before, .hl-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border-dim);
}

/* ============================================================
   PAGE 2: SUBJECTS  — GAME WORLD MAP STYLE
   ============================================================ */
.hl-subjects-page { background: var(--bg-dark); }

.hl-greeting-banner {
  padding: var(--sp-lg) var(--sp-md) var(--sp-sm);
}

.hl-greeting-hi {
  font-size: 13px; font-weight: 700; color: var(--t-muted);
  text-transform: uppercase; letter-spacing: 1px;
  margin-bottom: 2px;
}

.hl-greeting-name {
  font-size: 26px; font-weight: 900;
  color: var(--t-white);
  line-height: 1.1;
}

.hl-greeting-grade {
  display: inline-block;
  margin-top: 6px;
  background: rgba(0,200,83,0.12);
  border: 1px solid rgba(0,200,83,0.3);
  border-radius: var(--r-pill);
  padding: 3px 14px;
  font-size: 13px; font-weight: 800;
  color: var(--g-green);
}

/* XP / stats row */
.hl-stats-row {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: var(--sp-sm) var(--sp-md) var(--sp-md);
}

.hl-stat-mini {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--r-md);
  padding: 12px 14px;
  display: flex; align-items: center; gap: 10px;
}
.hl-stat-mini .sm-icon { font-size: 24px; }
.hl-stat-mini .sm-val {
  font-size: 22px; font-weight: 900;
  color: var(--t-white); line-height: 1;
}
.hl-stat-mini .sm-lbl {
  font-size: 10px; font-weight: 700;
  color: var(--t-muted); text-transform: uppercase;
}
.hl-stat-mini.gold .sm-val { color: var(--g-gold); }
.hl-stat-mini.green .sm-val { color: var(--g-green); }

/* Section head */
.hl-section-hd {
  padding: 0 var(--sp-md) var(--sp-sm);
  font-size: 12px; font-weight: 900;
  color: var(--t-muted);
  text-transform: uppercase; letter-spacing: 1.5px;
}

/* Subjects Grid */
.hl-subjects-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 0 var(--sp-md);
}

.hl-subject-card {
  border-radius: var(--r-lg);
  padding: var(--sp-md) var(--sp-md) var(--sp-lg);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;
  display: flex; flex-direction: column; justify-content: space-between;
  transition: var(--trans);
  border: 1px solid rgba(255,255,255,0.08);
}

.hl-subject-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}

.hl-subject-card:hover { transform: translateY(-4px) scale(1.02); }
.hl-subject-card:active { transform: scale(0.97); }

/* Subject card variants */
.hl-subject-card[data-subject="history"] {
  background: linear-gradient(145deg, #2D1B00, #1A1000);
}
.hl-subject-card[data-subject="history"]::before { background: var(--s-history); }
.hl-subject-card[data-subject="history"] { box-shadow: 0 4px 24px rgba(245,158,11,0.15); }

.hl-subject-card[data-subject="geography"] {
  background: linear-gradient(145deg, #001A10, #00100A);
}
.hl-subject-card[data-subject="geography"]::before { background: var(--s-geo); }
.hl-subject-card[data-subject="geography"] { box-shadow: 0 4px 24px rgba(16,185,129,0.15); }

.hl-subject-card[data-subject="civics"] {
  background: linear-gradient(145deg, #150C2D, #0E0720);
}
.hl-subject-card[data-subject="civics"]::before { background: var(--s-civics); }
.hl-subject-card[data-subject="civics"] { box-shadow: 0 4px 24px rgba(139,92,246,0.15); }

.hl-subject-card[data-subject="economics"] {
  background: linear-gradient(145deg, #2D0808, #1A0404);
}
.hl-subject-card[data-subject="economics"]::before { background: var(--s-economics); }
.hl-subject-card[data-subject="economics"] { box-shadow: 0 4px 24px rgba(239,68,68,0.15); }

/* Generic fallback */
.hl-subject-card:not([data-subject]) {
  background: linear-gradient(145deg, #0E1520, #0A0E1A);
}

.hl-subj-icon {
  font-size: 36px; line-height: 1;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.4));
}

.hl-subj-bottom { display: flex; flex-direction: column; }
.hl-subj-name {
  font-size: 18px; font-weight: 900;
  color: var(--t-white);
  line-height: 1.2;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
  margin-bottom: 4px;
}
.hl-subj-meta {
  font-size: 11px; font-weight: 700;
  color: rgba(255,255,255,0.5);
}

/* ============================================================
   BOTTOM NAV — GAME STYLE
   ============================================================ */
.hl-bottom-nav {
  position: fixed; bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 100%; max-width: 480px;
  background: rgba(10,14,26,0.95);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-dim);
  display: flex; z-index: 200;
}

.hl-nav-item {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 10px 0 8px; cursor: pointer;
  border: none; background: none;
  color: var(--t-dim); font-size: 10px; font-weight: 800;
  font-family: inherit; gap: 4px;
  transition: var(--trans);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.hl-nav-item .ni { font-size: 20px; transition: var(--trans); }
.hl-nav-item.active { color: var(--g-green); }
.hl-nav-item.active .ni { filter: drop-shadow(0 0 6px var(--g-green)); transform: scale(1.15); }

/* ============================================================
   PAGE 3: LESSON LIST
   ============================================================ */
.hl-lessons-page { background: var(--bg-dark); }

.hl-progress-section {
  padding: var(--sp-md) var(--sp-md) 0;
  margin-bottom: var(--sp-md);
}

.hl-progress-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 8px;
}
.hl-progress-header span {
  font-size: 11px; font-weight: 800; color: var(--t-muted);
  text-transform: uppercase; letter-spacing: 1px;
}
.hl-progress-header strong {
  font-size: 13px; font-weight: 900; color: var(--g-green);
}

.hl-progress-track {
  background: var(--bg-card2);
  border-radius: var(--r-pill);
  height: 10px; overflow: hidden;
  border: 1px solid var(--border-dim);
}
.hl-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--g-green), #00E676);
  border-radius: var(--r-pill);
  transition: width 0.7s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 0 8px rgba(0,200,83,0.4);
}

.hl-lessons-list {
  padding: 0 var(--sp-md);
  display: flex; flex-direction: column; gap: 10px;
}

.hl-lesson-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--r-lg);
  padding: var(--sp-md);
  display: flex; align-items: center; gap: var(--sp-md);
  cursor: pointer;
  transition: var(--trans);
  position: relative; overflow: hidden;
}
.hl-lesson-card::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--border-dim);
  transition: var(--trans);
}
.hl-lesson-card:hover { border-color: rgba(0,200,83,0.3); transform: translateX(4px); }
.hl-lesson-card:hover::before { background: var(--g-green); }
.hl-lesson-card.completed::before { background: var(--g-green); }
.hl-lesson-card.completed { background: rgba(0,200,83,0.05); }

.hl-lesson-num {
  width: 44px; height: 44px; border-radius: var(--r-md);
  background: var(--bg-card2);
  border: 1px solid var(--border-dim);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; flex-shrink: 0;
  transition: var(--trans);
}
.hl-lesson-card.completed .hl-lesson-num {
  background: rgba(0,200,83,0.15);
  border-color: rgba(0,200,83,0.3);
}

.hl-lesson-info { flex: 1; min-width: 0; }
.hl-lesson-title {
  font-size: 15px; font-weight: 800; color: var(--t-white);
  line-height: 1.3; margin-bottom: 3px;
}
.hl-lesson-badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px; font-weight: 700;
  color: var(--t-muted);
}
.hl-lesson-badge.done { color: var(--g-green); }
.hl-lesson-badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
}

.hl-lesson-pts {
  font-size: 12px; font-weight: 900;
  color: var(--g-gold);
  white-space: nowrap;
}

/* ============================================================
   PAGE 4: LESSON DETAIL
   ============================================================ */
.hl-lesson-detail-page { background: var(--bg-dark); }

.hl-video-tabs {
  display: flex;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-dim);
}
.hl-video-tab {
  flex: 1; padding: 13px;
  background: none; border: none;
  font-family: inherit; font-size: 13px; font-weight: 800;
  color: var(--t-muted); cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
  transition: var(--trans);
}
.hl-video-tab.active {
  color: var(--g-green);
  border-bottom-color: var(--g-green);
}

.hl-video-box {
  background: #000; position: relative;
}
.hl-video-box iframe, .hl-video-box video {
  width: 100%; aspect-ratio: 16/9; display: block; border: none;
}
.hl-video-placeholder {
  aspect-ratio: 16/9;
  background: var(--bg-card);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 10px; color: var(--t-dim);
}
.hl-video-placeholder .vp-icon { font-size: 48px; }
.hl-video-placeholder span { font-size: 13px; font-weight: 700; }

.hl-lesson-body { padding: var(--sp-md); }

.hl-lesson-h1 {
  font-size: 24px; font-weight: 900; color: var(--t-white);
  margin-bottom: var(--sp-sm); line-height: 1.2;
}
.hl-lesson-desc-text {
  font-size: 14px; color: var(--t-muted);
  line-height: 1.8; margin-bottom: var(--sp-md);
}

/* XP reward banner */
.hl-xp-banner {
  background: linear-gradient(135deg, rgba(255,215,0,0.1), rgba(229,172,0,0.05));
  border: 1px solid rgba(255,215,0,0.25);
  border-radius: var(--r-md);
  padding: 12px 16px;
  display: flex; align-items: center; gap: 12px;
  margin-bottom: var(--sp-md);
}
.hl-xp-banner .xb-icon { font-size: 28px; }
.hl-xp-banner .xb-text {
  font-size: 15px; font-weight: 900;
  color: var(--g-gold);
}
.hl-xp-banner .xb-sub {
  font-size: 11px; font-weight: 700; color: rgba(255,215,0,0.6);
}

/* Action buttons */
.hl-lesson-actions {
  padding: 0 var(--sp-md) var(--sp-md);
  display: flex; flex-direction: column; gap: 10px;
}

.hl-complete-btn {
  background: linear-gradient(135deg, var(--g-green) 0%, var(--g-green-dark) 100%);
  color: #fff;
  border: none; border-radius: var(--r-md);
  padding: 18px; font-size: 17px; font-weight: 900;
  font-family: inherit; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  box-shadow: var(--glow-green);
  transition: var(--trans); width: 100%;
  position: relative; overflow: hidden;
}
.hl-complete-btn::before {
  content: ''; position: absolute; top: 0; left: -100%; width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s;
}
.hl-complete-btn:hover::before { left: 150%; }
.hl-complete-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,200,83,0.45); }
.hl-complete-btn:active { transform: scale(0.98); }
.hl-complete-btn.done {
  background: var(--bg-card2);
  color: var(--g-green);
  border: 2px solid rgba(0,200,83,0.3);
  box-shadow: none;
  cursor: default;
}

.hl-quiz-btn {
  background: var(--bg-card);
  color: var(--t-dim);
  border: 2px solid var(--border-dim);
  border-radius: var(--r-md);
  padding: 16px; font-size: 16px; font-weight: 800;
  font-family: inherit; cursor: not-allowed;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  transition: var(--trans); width: 100%;
}
.hl-quiz-btn.ready {
  background: linear-gradient(135deg, var(--g-purple), var(--g-purple-dark));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(124,58,237,0.35);
  cursor: pointer;
}
.hl-quiz-btn.ready:hover { transform: translateY(-2px); box-shadow: var(--glow-purple); }

/* ============================================================
   QUIZ
   ============================================================ */
.hl-quiz-page { padding: var(--sp-md); padding-bottom: 100px; background: var(--bg-dark); }

.hl-quiz-hdr {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--sp-lg);
}
.hl-quiz-progress-txt {
  font-size: 13px; font-weight: 900; color: var(--g-green);
  text-transform: uppercase; letter-spacing: 0.5px;
}

.hl-quiz-dots { display: flex; gap: 5px; }
.hl-qdot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--bg-card2); border: 1px solid var(--border-dim);
  transition: var(--trans);
}
.hl-qdot.done { background: var(--g-green); border-color: var(--g-green); }
.hl-qdot.cur  { background: var(--g-green); border-color: var(--g-green); transform: scale(1.4); box-shadow: 0 0 8px var(--g-green); }

.hl-question-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--r-xl);
  padding: var(--sp-lg);
  box-shadow: var(--shadow-card);
  margin-bottom: var(--sp-md);
}

.hl-q-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 12px; border-radius: var(--r-pill);
  font-size: 10px; font-weight: 900;
  text-transform: uppercase; letter-spacing: 1px;
  margin-bottom: var(--sp-sm);
}
.hl-q-badge.mcq   { background: rgba(0,200,83,0.12); color: var(--g-green); border: 1px solid rgba(0,200,83,0.25); }
.hl-q-badge.fill  { background: rgba(59,130,246,0.12); color: var(--g-blue); border: 1px solid rgba(59,130,246,0.25); }
.hl-q-badge.match { background: rgba(124,58,237,0.12); color: #A78BFA; border: 1px solid rgba(124,58,237,0.25); }

.hl-question-txt {
  font-size: 18px; font-weight: 800;
  color: var(--t-white); line-height: 1.5;
  margin-bottom: var(--sp-lg);
}

/* MCQ Options */
.hl-mcq-opts { display: flex; flex-direction: column; gap: 10px; }

.hl-mcq-opt {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px;
  background: var(--bg-card2);
  border: 2px solid var(--border-dim);
  border-radius: var(--r-md);
  cursor: pointer; transition: var(--trans);
  font-family: inherit; font-size: 14px; font-weight: 700;
  color: var(--t-white); text-align: left; width: 100%;
}
.hl-mcq-opt:hover { border-color: rgba(0,200,83,0.4); background: rgba(0,200,83,0.05); }
.hl-mcq-opt .opt-l {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--bg-dark);
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 13px; flex-shrink: 0;
  border: 1px solid var(--border-dim);
  transition: var(--trans);
}
.hl-mcq-opt.correct { border-color: var(--g-green); background: rgba(0,200,83,0.1); color: #4ADE80; }
.hl-mcq-opt.correct .opt-l { background: var(--g-green); color: #000; border-color: var(--g-green); }
.hl-mcq-opt.wrong   { border-color: var(--g-red); background: rgba(239,68,68,0.1); color: #FCA5A5; }
.hl-mcq-opt.wrong .opt-l { background: var(--g-red); color: #fff; border-color: var(--g-red); }

/* Fill */
.hl-fill-inp {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-card2);
  border: 2px solid var(--border-dim);
  border-radius: var(--r-md);
  font-size: 16px; font-family: inherit;
  color: var(--t-white); outline: none;
  transition: var(--trans);
}
.hl-fill-inp:focus { border-color: var(--g-blue); box-shadow: 0 0 0 3px rgba(59,130,246,0.12); }
.hl-fill-inp::placeholder { color: var(--t-dim); }

/* Match */
.hl-match-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.hl-match-col { display: flex; flex-direction: column; gap: 8px; }

.hl-match-item {
  padding: 10px 12px;
  background: var(--bg-card2);
  border: 2px solid var(--border-dim);
  border-radius: var(--r-md);
  font-size: 12px; font-weight: 700;
  cursor: pointer; transition: var(--trans);
  text-align: center; font-family: inherit;
  color: var(--t-white);
}
.hl-match-item:hover { border-color: rgba(124,58,237,0.5); }
.hl-match-item.selected { border-color: var(--g-purple); background: rgba(124,58,237,0.12); color: #C4B5FD; }
.hl-match-item.matched  { border-color: var(--g-green); background: rgba(0,200,83,0.1); color: #4ADE80; }

/* Feedback */
.hl-feedback {
  display: none;
  border-radius: var(--r-md);
  padding: var(--sp-md);
  margin-top: var(--sp-md);
  animation: pageIn 0.25s ease;
  border: 1px solid;
}
.hl-feedback.show { display: block; }
.hl-feedback.correct { background: rgba(0,200,83,0.08); border-color: rgba(0,200,83,0.3); }
.hl-feedback.wrong   { background: rgba(239,68,68,0.08); border-color: rgba(239,68,68,0.3); }

.hl-fb-head {
  font-size: 16px; font-weight: 900; margin-bottom: 6px;
  display: flex; align-items: center; gap: 6px;
}
.hl-feedback.correct .hl-fb-head { color: #4ADE80; }
.hl-feedback.wrong   .hl-fb-head { color: #FCA5A5; }
.hl-fb-exp { font-size: 13px; color: var(--t-muted); line-height: 1.7; }

/* Quiz actions */
.hl-quiz-acts { display: flex; flex-direction: column; gap: 8px; margin-top: var(--sp-md); }

/* ============================================================
   RESULT PAGE
   ============================================================ */
.hl-result-page {
  min-height: 100vh; background: var(--bg-dark);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: var(--sp-xl) var(--sp-md);
  text-align: center;
}

.hl-result-trophy {
  font-size: 80px; line-height: 1;
  margin-bottom: var(--sp-md);
  animation: bounceIn 0.6s ease;
  filter: drop-shadow(0 0 24px rgba(255,215,0,0.5));
}

@keyframes bounceIn {
  0%   { transform: scale(0.2) rotate(-10deg); opacity: 0; }
  60%  { transform: scale(1.15) rotate(3deg); }
  80%  { transform: scale(0.95); }
  100% { transform: scale(1); opacity: 1; }
}

.hl-result-h1 { font-size: 30px; font-weight: 900; color: var(--t-white); margin-bottom: 4px; }
.hl-result-sub { font-size: 14px; color: var(--t-muted); margin-bottom: var(--sp-xl); }

.hl-result-stats {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 10px; width: 100%; margin-bottom: var(--sp-xl);
}
.hl-result-stat {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--r-lg);
  padding: var(--sp-md) var(--sp-sm);
}
.hl-result-stat .rv {
  font-size: 26px; font-weight: 900; color: var(--g-green); line-height: 1;
}
.hl-result-stat .rl {
  font-size: 10px; font-weight: 800; color: var(--t-muted);
  text-transform: uppercase; letter-spacing: 0.8px; margin-top: 4px;
}

/* ============================================================
   PROFILE PAGE
   ============================================================ */
.hl-profile-page { background: var(--bg-dark); padding-bottom: 100px; }

.hl-profile-hero {
  margin: var(--sp-md);
  background: linear-gradient(145deg, var(--bg-card2), var(--bg-card));
  border: 1px solid var(--border-dim);
  border-radius: var(--r-xl);
  padding: var(--sp-xl) var(--sp-md);
  text-align: center;
  position: relative; overflow: hidden;
}
.hl-profile-hero::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--g-green), var(--g-gold), var(--g-purple));
}

.hl-avatar {
  width: 72px; height: 72px; border-radius: 50%;
  background: linear-gradient(135deg, var(--g-green), var(--g-green-dark));
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 900; color: #fff;
  margin: 0 auto var(--sp-sm);
  border: 3px solid rgba(0,200,83,0.3);
  box-shadow: 0 0 20px rgba(0,200,83,0.3);
}
.hl-profile-name {
  font-size: 22px; font-weight: 900; color: var(--t-white);
  line-height: 1.1; margin-bottom: 4px;
}
.hl-profile-email { font-size: 12px; color: var(--t-muted); margin-bottom: 10px; }
.hl-grade-pill {
  display: inline-block;
  background: rgba(0,200,83,0.12);
  border: 1px solid rgba(0,200,83,0.3);
  border-radius: var(--r-pill);
  padding: 4px 16px;
  font-size: 13px; font-weight: 800; color: var(--g-green);
}

.hl-profile-stats {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px; padding: 0 var(--sp-md) var(--sp-md);
}
.hl-profile-stat {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--r-lg);
  padding: var(--sp-lg) var(--sp-md);
  text-align: center;
}
.hl-ps-icon { font-size: 28px; margin-bottom: 6px; }
.hl-ps-val { font-size: 32px; font-weight: 900; color: var(--t-white); line-height: 1; margin-bottom: 4px; }
.hl-ps-val.gold   { color: var(--g-gold); }
.hl-ps-val.green  { color: var(--g-green); }
.hl-ps-label {
  font-size: 11px; font-weight: 800;
  color: var(--t-muted); text-transform: uppercase; letter-spacing: 0.8px;
}

.hl-badges-section { padding: 0 var(--sp-md); }
.hl-badges-hd {
  font-size: 13px; font-weight: 900;
  color: var(--t-muted); text-transform: uppercase;
  letter-spacing: 1.5px; margin-bottom: var(--sp-md);
}
.hl-badges-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.hl-badge-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--r-lg);
  padding: var(--sp-md);
  text-align: center; position: relative; overflow: hidden;
  transition: var(--trans);
}
.hl-badge-card.unlocked {
  border-color: rgba(0,200,83,0.3);
  background: rgba(0,200,83,0.04);
}
.hl-badge-card.unlocked::before {
  content: ''; position: absolute;
  inset: 0; border-radius: var(--r-lg);
  box-shadow: inset 0 0 20px rgba(0,200,83,0.05);
}

.hl-badge-ico { font-size: 36px; margin-bottom: 6px; }
.hl-badge-card:not(.unlocked) .hl-badge-ico { filter: grayscale(1); opacity: 0.4; }
.hl-badge-nm {
  font-size: 12px; font-weight: 800; color: var(--t-white); margin-bottom: 2px;
}
.hl-badge-st {
  font-size: 10px; font-weight: 700; color: var(--t-muted);
}
.hl-badge-bar {
  height: 3px; background: var(--bg-card2);
  border-radius: var(--r-pill); margin-top: 8px; overflow: hidden;
}
.hl-badge-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--g-green), #00E676);
  border-radius: var(--r-pill);
  box-shadow: 0 0 6px rgba(0,200,83,0.5);
}

/* ============================================================
   GLOBAL FX
   ============================================================ */
/* Toast */
.hl-toast {
  position: fixed;
  bottom: 96px; left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  color: var(--t-white);
  padding: 12px 24px;
  border-radius: var(--r-pill);
  font-size: 14px; font-weight: 700;
  z-index: 9998; opacity: 0; pointer-events: none;
  transition: all 0.3s ease;
  white-space: nowrap;
  backdrop-filter: blur(8px);
}
.hl-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.hl-toast.success { background: rgba(0,200,83,0.15); border-color: rgba(0,200,83,0.4); color: #4ADE80; }
.hl-toast.error   { background: rgba(239,68,68,0.15); border-color: rgba(239,68,68,0.4); color: #FCA5A5; }
.hl-toast.gold    { background: rgba(255,215,0,0.15); border-color: rgba(255,215,0,0.4); color: var(--g-gold); }

/* Points Popup */
.hl-pts-popup {
  position: fixed; top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0);
  background: var(--bg-card);
  border: 1px solid rgba(0,200,83,0.3);
  border-radius: var(--r-xl);
  padding: var(--sp-xl) var(--sp-xl);
  text-align: center; z-index: 9997;
  box-shadow: 0 0 60px rgba(0,200,83,0.2), 0 24px 64px rgba(0,0,0,0.6);
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
  min-width: 240px;
}
.hl-pts-popup.show { transform: translate(-50%, -50%) scale(1); }
.hl-pts-popup .pp-icon { font-size: 56px; margin-bottom: 10px; }
.hl-pts-popup .pp-pts  {
  font-size: 44px; font-weight: 900;
  background: linear-gradient(135deg, var(--g-green), #00E676);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}
.hl-pts-popup .pp-lbl  { font-size: 13px; font-weight: 700; color: var(--t-muted); }

/* Overlay */
.hl-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.7); z-index: 9996;
  backdrop-filter: blur(2px);
}
.hl-overlay.show { display: block; }

/* Confetti */
.hl-confetti-wrap {
  position: fixed; inset: 0; pointer-events: none; z-index: 9999; overflow: hidden;
}
.hl-confetti-piece {
  position: absolute; top: -20px;
  width: 10px; height: 10px; border-radius: 2px;
  animation: confettiFall 1.6s ease-out forwards;
}
@keyframes confettiFall {
  0%   { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(80vh) rotate(720deg); opacity: 0; }
}

/* Loader */
.hl-loader { display: flex; align-items: center; justify-content: center; min-height: 160px; }
.hl-spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--bg-card2);
  border-top-color: var(--g-green);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Empty state */
.hl-empty { text-align: center; padding: 48px var(--sp-md); color: var(--t-muted); }
.hl-empty-ico { font-size: 52px; margin-bottom: var(--sp-md); }
.hl-empty-txt { font-size: 15px; font-weight: 700; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (min-width: 481px) {
  .hl-wrapper { box-shadow: 0 0 80px rgba(0,0,0,0.5); }
}

@media (max-width: 360px) {
  .hl-logo-title { font-size: 28px; }
  .hl-question-txt { font-size: 16px; }
  .hl-subj-name { font-size: 15px; }
}