/* ═══════════════════════════════════════════════════════════════
   ISHBizUK · Complete Design System
   Dark glassmorphism · Manrope + Sora · Full responsive
═══════════════════════════════════════════════════════════════ */

/* ── RESET & ROOT ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0a0d14;
  --bg2:         #0f1320;
  --surface:     rgba(255,255,255,0.04);
  --surface-h:   rgba(255,255,255,0.07);
  --border:      rgba(255,255,255,0.08);
  --border-h:    rgba(255,255,255,0.16);
  --text:        #e8ecf4;
  --text-2:      #9aa3b8;
  --text-3:      #6b7490;
  --accent:      #7ed4c9;
  --accent-2:    #a78bfa;
  --accent-3:    #f9a8d4;
  --accent-4:    #fbbf24;
  --green:       #4ade80;
  --red:         #f87171;
  --teal:        #2dd4bf;
  --purple:      #a78bfa;
  --coral:       #fb7185;
  --amber:       #fbbf24;
  --radius:      14px;
  --radius-lg:   20px;
  --shadow:      0 8px 32px rgba(0,0,0,0.4);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.5);
  --transition:  all 0.22s cubic-bezier(0.4,0,0.2,1);
  --font-body:   'Manrope', system-ui, sans-serif;
  --font-display:'Sora', 'Manrope', sans-serif;
  --max:         1200px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── BACKGROUND ───────────────────────────────────────────────── */
.bg-grid {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(126,212,201,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,212,201,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
}
.bg-orb { position: fixed; border-radius: 50%; filter: blur(80px); pointer-events: none; z-index: 0; opacity: 0.35; }
.orb-1 { width: 500px; height: 500px; background: radial-gradient(circle, #7ed4c940, transparent 70%); top: -150px; right: -100px; }
.orb-2 { width: 400px; height: 400px; background: radial-gradient(circle, #a78bfa30, transparent 70%); bottom: 10%; left: -100px; }
.orb-3 { width: 350px; height: 350px; background: radial-gradient(circle, #f9a8d420, transparent 70%); top: 50%; right: 10%; }

/* ── LAYOUT ───────────────────────────────────────────────────── */
.container { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; position: relative; z-index: 1; }
.section-block { padding: 4rem 0; }

/* ── TYPOGRAPHY ───────────────────────────────────────────────── */
h1,h2,h3,h4 { font-family: var(--font-display); line-height: 1.2; }
h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; font-weight: 700; }
a  { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: #fff; }

.eyebrow {
  display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 0.5rem;
}

/* ── GLASS CARD ───────────────────────────────────────────────── */
.glass-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px); box-shadow: var(--shadow);
  transition: var(--transition);
}
.glass-card:hover { border-color: var(--border-h); box-shadow: var(--shadow-lg); }

/* ── BUTTONS ──────────────────────────────────────────────────── */
.primary-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.75rem; border-radius: 100px; border: none;
  background: linear-gradient(135deg, var(--teal), var(--accent-2));
  color: #0a0d14; font-weight: 700; font-size: 0.95rem; cursor: pointer;
  transition: var(--transition); text-decoration: none; font-family: var(--font-body);
}
.primary-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(126,212,201,0.35); color: #0a0d14; }
.primary-btn:active { transform: translateY(0); }

.secondary-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.75rem; border-radius: 100px;
  border: 1px solid var(--border-h); background: transparent;
  color: var(--text); font-weight: 600; font-size: 0.95rem;
  cursor: pointer; transition: var(--transition); text-decoration: none;
  font-family: var(--font-body);
}
.secondary-btn:hover { background: var(--surface-h); border-color: var(--accent); color: var(--accent); }

.full-btn { width: 100%; justify-content: center; border-radius: var(--radius); }

/* ── HEADER ───────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100; padding: 0.9rem 0;
  background: rgba(10,13,20,0.85); backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.brand { font-family: var(--font-display); font-size: 1.5rem; font-weight: 800; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); }
.top-nav { display: flex; gap: 0.25rem; margin-left: auto; flex-wrap: wrap; }
.top-nav a {
  padding: 0.45rem 0.9rem; border-radius: 100px; font-size: 0.875rem; font-weight: 600;
  color: var(--text-2); transition: var(--transition);
}
.top-nav a:hover, .top-nav a.nav-current { background: var(--surface); color: var(--text); }
#nav-slot { display: flex; align-items: center; }

/* ── USER BAR ─────────────────────────────────────────────────── */
.user-bar { display: flex; align-items: center; gap: 0.75rem; }
.user-greeting { font-size: 0.875rem; color: var(--text-2); }
.logout-btn {
  padding: 0.35rem 0.85rem; border-radius: 100px; font-size: 0.8rem;
  font-weight: 600; border: 1px solid var(--border-h); background: transparent;
  color: var(--text-2); cursor: pointer; transition: var(--transition);
  font-family: var(--font-body);
}
.logout-btn:hover { background: var(--surface); color: var(--text); }

/* ── INFO BAR ─────────────────────────────────────────────────── */
.info-bar { background: rgba(255,255,255,0.02); border-bottom: 1px solid var(--border); padding: 0.6rem 0; }
.info-bar-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.75rem; }
.rating-group { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.info-label { font-size: 0.8rem; color: var(--text-3); }
.star-row { display: flex; gap: 2px; }
.star-btn {
  background: none; border: none; font-size: 1.2rem; color: var(--text-3);
  cursor: pointer; padding: 0.1rem; transition: var(--transition); line-height: 1;
}
.star-btn:hover, .star-btn.star-hover, .star-btn.star-lit { color: var(--accent-4); }
.star-btn:disabled { cursor: default; }
.rating-avg { font-size: 0.8rem; color: var(--text-2); }
.visitor-pill { font-size: 0.8rem; color: var(--text-2); background: var(--surface); padding: 0.3rem 0.75rem; border-radius: 100px; border: 1px solid var(--border); }

/* ── HERO ─────────────────────────────────────────────────────── */
.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: start; padding: 4rem 0; }
.hero-copy { padding: 2.5rem; }
.hero-mini { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.75rem; }
.hero-logo { font-family: var(--font-display); font-size: clamp(3rem, 6vw, 4.5rem); font-weight: 800; margin-bottom: 0.5rem; }
.hero-logo span { color: var(--accent); }
.hero-tagline { font-size: 1.05rem; color: var(--accent-2); font-style: italic; margin-bottom: 1rem; font-weight: 500; }
.hero-text { color: var(--text-2); margin-bottom: 1.75rem; font-size: 0.975rem; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.75rem; }
.hero-stats { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.stat-chip { display: flex; flex-direction: column; align-items: center; padding: 0.6rem 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); min-width: 80px; }
.stat-chip strong { font-size: 1.05rem; font-weight: 800; color: var(--accent); font-family: var(--font-display); }
.stat-chip span { font-size: 0.7rem; color: var(--text-3); text-align: center; }

/* ── DASHBOARD ────────────────────────────────────────────────── */
.hero-panel { padding: 1.75rem; }
.panel-title { font-size: 1rem; font-weight: 700; margin-bottom: 1.25rem; color: var(--text-2); text-transform: uppercase; letter-spacing: 0.06em; }
.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-bottom: 1.25rem; }
.dash-box { padding: 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); text-align: center; transition: var(--transition); }
.glow-box:hover { border-color: var(--accent); box-shadow: 0 0 20px rgba(126,212,201,0.15); }
.dash-label { display: block; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); margin-bottom: 0.35rem; }
.dash-box strong { font-size: 1.1rem; font-weight: 800; color: var(--text); font-family: var(--font-display); }
.progress-wrap { margin-bottom: 1.25rem; }
.progress-top { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--text-2); margin-bottom: 0.5rem; }
.progress-bar { height: 8px; background: var(--surface); border-radius: 100px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--teal), var(--accent-2)); border-radius: 100px; transition: width 0.6s ease; }
.challenge-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 0.875rem; }
.challenge-box p { font-size: 0.875rem; color: var(--text-2); margin-top: 0.35rem; }

@keyframes pop { 0%,100%{transform:scale(1)} 50%{transform:scale(1.25)} }
.pop { animation: pop 0.3s ease; }

/* ── MARK GUIDE ───────────────────────────────────────────────── */
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; margin-bottom: 2rem; }
.section-heading h2 { margin-top: 0.25rem; }
.section-sub { color: var(--text-2); font-size: 0.95rem; max-width: 500px; }
.mark-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.mark-card { display: flex; align-items: flex-start; gap: 1rem; padding: 1.25rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); transition: var(--transition); }
.mark-card:hover { background: var(--surface-h); border-color: var(--border-h); }
.mark-num { flex-shrink: 0; width: 3rem; height: 3rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-size: 1.25rem; font-weight: 800; }
.mark-card.low .mark-num  { background: rgba(126,212,201,0.15); color: var(--teal); }
.mark-card.mid .mark-num  { background: rgba(251,191,36,0.15);  color: var(--amber); }
.mark-card.high .mark-num { background: rgba(167,139,250,0.15); color: var(--purple); }
.mark-info strong { display: block; font-size: 0.95rem; margin-bottom: 0.25rem; }
.mark-info p { font-size: 0.8rem; color: var(--text-2); }

/* ── ABILITY TOGGLE ───────────────────────────────────────────── */
.ability-bar { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; padding: 1rem 1.25rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.ability-label { font-size: 0.85rem; font-weight: 600; color: var(--text-2); }
.ability-toggle { display: flex; gap: 0.35rem; background: rgba(255,255,255,0.04); border: 1px solid var(--border); border-radius: 100px; padding: 0.25rem; }
.ability-btn { padding: 0.45rem 1.25rem; border-radius: 100px; border: none; background: transparent; color: var(--text-2); font-weight: 600; font-size: 0.875rem; cursor: pointer; transition: var(--transition); font-family: var(--font-body); }
.ability-btn.active { background: linear-gradient(135deg, var(--teal), var(--accent-2)); color: #0a0d14; box-shadow: 0 2px 12px rgba(126,212,201,0.3); }
.ability-hint { font-size: 0.78rem; color: var(--text-3); margin-left: auto; }

/* ── TOPIC TABS ───────────────────────────────────────────────── */
.topic-tabs { display: flex; gap: 0.35rem; flex-wrap: wrap; margin-bottom: 1.5rem; padding: 0.35rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.topic-tab { padding: 0.55rem 1.1rem; border-radius: 10px; border: none; background: transparent; color: var(--text-2); font-weight: 600; font-size: 0.875rem; cursor: pointer; transition: var(--transition); font-family: var(--font-body); white-space: nowrap; }
.topic-tab:hover { background: var(--surface-h); color: var(--text); }
.topic-tab.active { background: var(--bg2); color: var(--accent); border: 1px solid var(--border-h); }

/* ── TOPIC META ───────────────────────────────────────────────── */
.topic-meta { padding: 1.5rem; margin-bottom: 1.5rem; }
.meta-inner { display: flex; align-items: flex-start; gap: 2rem; flex-wrap: wrap; }
.meta-inner h3 { font-size: 1.15rem; margin-bottom: 0.25rem; }
.meta-intro { font-size: 0.875rem; color: var(--text-2); }
.status-chip { display: inline-flex; align-items: center; gap: 0.3rem; padding: 0.2rem 0.6rem; background: rgba(74,222,128,0.12); color: var(--green); border-radius: 100px; font-size: 0.72rem; font-weight: 700; margin-bottom: 0.4rem; }
.quick-wins { list-style: none; margin-top: 0; min-width: 250px; }
.quick-wins li { font-size: 0.82rem; color: var(--text-2); padding: 0.25rem 0; border-bottom: 1px solid var(--border); }
.quick-wins li:last-child { border: none; }

/* ── MODULE LIST ──────────────────────────────────────────────── */
.choose-module { font-size: 0.9rem; font-weight: 600; color: var(--text-2); margin-bottom: 1rem; text-transform: uppercase; letter-spacing: 0.07em; }
.mod-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
.mod-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.25rem; text-align: left; cursor: pointer; transition: var(--transition); font-family: var(--font-body); }
.mod-card:hover { background: var(--surface-h); border-color: var(--accent); transform: translateY(-3px); box-shadow: 0 12px 32px rgba(0,0,0,0.3); }
.mod-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; }
.mod-num { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); }
.mod-done { font-size: 0.72rem; color: var(--text-3); }
.mod-title { font-size: 0.95rem; font-weight: 700; color: var(--text); margin-bottom: 0.75rem; }
.mod-bar { height: 4px; background: var(--surface); border-radius: 100px; overflow: hidden; }
.mod-fill { height: 100%; background: linear-gradient(90deg, var(--teal), var(--accent-2)); border-radius: 100px; transition: width 0.4s ease; }

/* ── MODULE CONTENT ───────────────────────────────────────────── */
.module-content-area { animation: fadeIn 0.25s ease; }
@keyframes fadeIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:none} }
.mc-header { margin-bottom: 1.25rem; }
.back-btn { background: none; border: 1px solid var(--border); color: var(--text-2); padding: 0.4rem 0.9rem; border-radius: 100px; cursor: pointer; font-size: 0.82rem; font-weight: 600; font-family: var(--font-body); transition: var(--transition); margin-bottom: 0.75rem; }
.back-btn:hover { background: var(--surface); color: var(--text); }
.mc-title-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.mc-title-row h2 { font-size: 1.5rem; }
.ability-badge { padding: 0.4rem 1rem; border-radius: 100px; font-size: 0.78rem; font-weight: 700; flex-shrink: 0; }
.ability-badge.foundation { background: rgba(74,222,128,0.15); color: var(--green); border: 1px solid rgba(74,222,128,0.3); }
.ability-badge.higher     { background: rgba(167,139,250,0.15); color: var(--purple); border: 1px solid rgba(167,139,250,0.3); }

/* ── SECTION TABS ─────────────────────────────────────────────── */
.sec-tabs { display: flex; gap: 0.35rem; flex-wrap: wrap; margin-bottom: 1.25rem; padding: 0.3rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.sec-tab { flex: 1; min-width: 120px; padding: 0.6rem 0.5rem; border-radius: 10px; border: none; background: transparent; color: var(--text-2); font-weight: 600; font-size: 0.82rem; cursor: pointer; transition: var(--transition); font-family: var(--font-body); white-space: nowrap; }
.sec-tab:hover { background: var(--surface-h); color: var(--text); }
.sec-tab.active { background: linear-gradient(135deg, rgba(126,212,201,0.2), rgba(167,139,250,0.2)); color: var(--text); border: 1px solid var(--border-h); }
.sec-tab.done { color: var(--green); }

/* ── SEC PLACEHOLDER ──────────────────────────────────────────── */
.sec-placeholder { text-align: center; padding: 3rem 2rem; color: var(--text-2); }
.sec-placeholder p { font-size: 1.05rem; }
.ph-sub { font-size: 0.85rem; color: var(--text-3); margin-top: 0.5rem; }

/* ── LEARN ────────────────────────────────────────────────────── */
.learn-card { padding: 2rem; }
.learn-text { font-size: 0.95rem; line-height: 1.8; color: var(--text); margin-bottom: 1.5rem; }
.learn-text h4 { font-family: 'Sora', sans-serif; font-size: 1rem; font-weight: 700; color: var(--accent); margin: 1.4rem 0 0.5rem; padding-bottom: 0.2rem; border-bottom: 1px solid rgba(94,234,212,0.15); }
.learn-text h4:first-child { margin-top: 0; }
.learn-text p { margin: 0 0 0.75rem; }
.learn-text ul, .learn-text ol { margin: 0.4rem 0 0.9rem 1.2rem; padding: 0; }
.learn-text li { margin-bottom: 0.45rem; }
.learn-text li ul { margin-top: 0.3rem; margin-bottom: 0.3rem; }
.learn-text strong { color: #e2e8f0; }
.learn-text em { color: #94a3b8; font-style: italic; }
.learn-text table { width: 100%; border-collapse: collapse; font-size: 0.85rem; margin: 0.75rem 0 1rem; border-radius: 0.5rem; overflow: hidden; }
.learn-text th { background: rgba(94,234,212,0.1); color: var(--accent); font-weight: 700; padding: 0.5rem 0.75rem; text-align: left; border-bottom: 1px solid rgba(94,234,212,0.2); }
.learn-text td { padding: 0.45rem 0.75rem; border-bottom: 1px solid rgba(255,255,255,0.06); vertical-align: top; }
.learn-text tr:last-child td { border-bottom: none; }
.trap-box { background: rgba(251,191,36,0.08); border: 1px solid rgba(251,191,36,0.25); border-radius: var(--radius); padding: 1.1rem 1.25rem; margin-bottom: 1rem; }
.trap-box h4 { color: var(--amber); font-size: 0.9rem; margin-bottom: 0.4rem; }
.trap-box p  { font-size: 0.875rem; color: var(--text-2); }
.eg-box { background: rgba(126,212,201,0.06); border: 1px solid rgba(126,212,201,0.2); border-radius: var(--radius); padding: 1.1rem 1.25rem; margin-bottom: 1.5rem; }
.eg-box h4 { color: var(--accent); font-size: 0.9rem; margin-bottom: 0.4rem; }
.eg-box p  { font-size: 0.875rem; color: var(--text-2); }

/* ── KEY TERMS ────────────────────────────────────────────────── */
.terms-card { padding: 2rem; }
.terms-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 0.75rem; margin-bottom: 1.5rem; }
.term-tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; transition: var(--transition); }
.term-tile:hover { background: var(--surface-h); border-color: var(--border-h); }
.term-tile strong { display: block; color: var(--accent); font-size: 0.875rem; margin-bottom: 0.35rem; }
.term-tile p { font-size: 0.825rem; color: var(--text-2); }

/* ── QUIZ ─────────────────────────────────────────────────────── */
.quiz-wrap { padding: 2rem; }
.quiz-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 0.75rem; }
.q-count { font-size: 0.8rem; color: var(--text-3); font-weight: 400; }
.score-pill { padding: 0.4rem 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: 100px; font-size: 0.85rem; font-weight: 700; color: var(--accent); }
.q-item { margin-bottom: 1.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.q-item:last-child { border: none; }
.q-text { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.75rem; }
.q-opts { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.q-opt { padding: 0.65rem 0.9rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); font-size: 0.85rem; font-weight: 500; cursor: pointer; transition: var(--transition); text-align: left; font-family: var(--font-body); }
.q-opt:hover:not(:disabled) { background: var(--surface-h); border-color: var(--accent); }
.q-opt:disabled { cursor: default; }
.q-opt.q-correct { background: rgba(74,222,128,0.15); border-color: var(--green); color: var(--green); }
.q-opt.q-wrong   { background: rgba(248,113,113,0.15); border-color: var(--red); color: var(--red); }
.q-fb { font-size: 0.82rem; padding: 0.6rem 0.8rem; border-radius: var(--radius); margin-top: 0.6rem; display: none; }
.q-fb-ok  { background: rgba(74,222,128,0.1); color: var(--green); border: 1px solid rgba(74,222,128,0.25); display: block; }
.q-fb-err { background: rgba(248,113,113,0.1); color: var(--red);   border: 1px solid rgba(248,113,113,0.25); display: block; }
.q-complete { text-align: center; padding: 1.5rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); margin-top: 1rem; }
.q-complete h4 { font-size: 1.3rem; margin-bottom: 0.5rem; }
.q-complete p { color: var(--text-2); margin-bottom: 0.5rem; }

/* ── FLASHCARDS ───────────────────────────────────────────────── */
.fc-wrap { padding: 1rem 0; }
.fc-wrap h3 { margin-bottom: 0.5rem; }
.fc-hint { font-size: 0.85rem; color: var(--text-2); margin-bottom: 1.25rem; }
.fc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.flashcard { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.25rem; transition: var(--transition); }
.flashcard:hover { border-color: var(--border-h); }
.flashcard.revealed { border-color: var(--accent); background: rgba(126,212,201,0.05); }
.mini-chip { display: inline-block; font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); margin-bottom: 0.5rem; }
.fc-front h4 { font-size: 0.9rem; font-weight: 700; color: var(--text); margin-bottom: 0.75rem; }
.fc-toggle { background: transparent; border: 1px solid var(--border); color: var(--text-2); padding: 0.35rem 0.8rem; border-radius: 100px; font-size: 0.78rem; font-weight: 600; cursor: pointer; transition: var(--transition); font-family: var(--font-body); }
.fc-toggle:hover { background: var(--surface-h); color: var(--accent); border-color: var(--accent); }
.fc-back { margin-top: 0.75rem; font-size: 0.875rem; color: var(--accent); line-height: 1.6; padding-top: 0.75rem; border-top: 1px solid var(--border); }

/* ── EXAM PRACTICE ────────────────────────────────────────────── */
.exam-wrap { padding: 1rem 0; }
.exam-wrap h3 { margin-bottom: 0.5rem; }
.exam-hint { font-size: 0.85rem; color: var(--text-2); margin-bottom: 1.5rem; }
.eq-card { padding: 1.75rem; margin-bottom: 1.25rem; }
.eq-top { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; }
.eq-badge { padding: 0.2rem 0.7rem; border-radius: 100px; background: rgba(167,139,250,0.15); color: var(--purple); font-size: 0.72rem; font-weight: 700; border: 1px solid rgba(167,139,250,0.3); }
.eq-marks { font-size: 0.78rem; font-weight: 700; color: var(--accent-4); background: rgba(251,191,36,0.1); padding: 0.2rem 0.6rem; border-radius: 100px; }
.eq-q { font-size: 1rem; font-weight: 600; margin-bottom: 1rem; line-height: 1.55; }
.eq-struct { background: rgba(126,212,201,0.06); border: 1px solid rgba(126,212,201,0.18); border-radius: var(--radius); padding: 0.9rem 1rem; margin-bottom: 1rem; }
.eq-struct h4 { font-size: 0.82rem; color: var(--accent); margin-bottom: 0.5rem; }
.eq-struct ol { padding-left: 1.2rem; }
.eq-struct li { font-size: 0.82rem; color: var(--text-2); margin-bottom: 0.2rem; }
.reveal-btn { padding: 0.55rem 1.1rem; border: 1px solid var(--border-h); border-radius: var(--radius); background: transparent; color: var(--accent); font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: var(--transition); font-family: var(--font-body); }
.reveal-btn:hover { background: rgba(126,212,201,0.08); }
.model-ans { margin-top: 1rem; padding: 1.25rem; background: rgba(74,222,128,0.06); border: 1px solid rgba(74,222,128,0.2); border-radius: var(--radius); }
.model-ans h4 { color: var(--green); font-size: 0.85rem; margin-bottom: 0.6rem; }
.model-ans p { font-size: 0.875rem; color: var(--text-2); line-height: 1.75; margin-bottom: 0.6rem; }
.model-ans p:last-child { margin-bottom: 0; }

/* ── DONE / RESET BTNS ────────────────────────────────────────── */
.done-btn {
  display: block; width: 100%; padding: 0.85rem; margin-top: 1.25rem;
  border: none; border-radius: var(--radius); cursor: pointer; font-weight: 700;
  font-size: 0.95rem; font-family: var(--font-body); transition: var(--transition);
  background: linear-gradient(135deg, rgba(74,222,128,0.2), rgba(126,212,201,0.2));
  color: var(--green); border: 1px solid rgba(74,222,128,0.3);
}
.done-btn:hover { background: linear-gradient(135deg, rgba(74,222,128,0.3), rgba(126,212,201,0.3)); }
.done-btn:disabled { opacity: 0.5; cursor: default; }
.already-done { font-size: 0.85rem; color: var(--green); text-align: center; margin-top: 0.75rem; }
.sec-ctrl { margin-bottom: 1rem; text-align: right; }
.reset-btn { padding: 0.4rem 0.85rem; border: 1px solid var(--border-h); border-radius: 100px; background: transparent; color: var(--text-3); font-size: 0.78rem; font-weight: 600; cursor: pointer; font-family: var(--font-body); transition: var(--transition); }
.reset-btn:hover { color: var(--accent-3); border-color: var(--accent-3); }

/* ── AUTH MODAL ───────────────────────────────────────────────── */
#auth-modal { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.auth-backdrop { position: absolute; inset: 0; background: rgba(5,7,12,0.88); backdrop-filter: blur(8px); }
.auth-box { position: relative; width: 100%; max-width: 420px; padding: 2.5rem; text-align: center; z-index: 1; }
.auth-logo { font-family: var(--font-display); font-size: 2rem; font-weight: 800; margin-bottom: 0.25rem; }
.auth-logo span { color: var(--accent); }
.auth-tagline { font-size: 0.875rem; color: var(--text-2); margin-bottom: 1.5rem; }
.auth-tabs { display: flex; background: var(--surface); border: 1px solid var(--border); border-radius: 100px; padding: 0.25rem; margin-bottom: 1.5rem; }
.auth-tab { flex: 1; padding: 0.5rem; border: none; background: transparent; color: var(--text-2); font-weight: 600; font-size: 0.875rem; cursor: pointer; border-radius: 100px; transition: var(--transition); font-family: var(--font-body); }
.auth-tab.active { background: linear-gradient(135deg, var(--teal), var(--accent-2)); color: #0a0d14; }
.auth-form { flex-direction: column; gap: 0.75rem; }
.auth-form input { width: 100%; padding: 0.75rem 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); font-size: 0.9rem; font-family: var(--font-body); transition: var(--transition); outline: none; }
.auth-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(126,212,201,0.12); }
.auth-form input::placeholder { color: var(--text-3); }
.auth-error { font-size: 0.8rem; color: var(--red); min-height: 1rem; }

/* ── SECTION HEADING ──────────────────────────────────────────── */
.section-heading .section-sub { font-size: 0.9rem; }

/* ── A LEVEL ──────────────────────────────────────────────────── */








/* ── FOOTER ───────────────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--border); padding: 2rem 0; margin-top: 2rem; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 2rem; flex-wrap: wrap; }
.footer-left p { font-size: 0.85rem; color: var(--text-2); margin-bottom: 0.25rem; }
.footer-brand { font-family: var(--font-display); font-size: 1.25rem; font-weight: 800; color: var(--text); margin-bottom: 0.5rem !important; }
.footer-brand span { color: var(--accent); }
.footer-links { display: flex; flex-direction: column; gap: 0.35rem; align-items: flex-end; }
.footer-links a { font-size: 0.85rem; color: var(--text-2); }
.footer-links a:hover { color: var(--accent); }

/* ── CONFETTI ─────────────────────────────────────────────────── */
.confetti-container { position: fixed; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: 9999; }
.confetti-piece { position: absolute; top: -10px; width: 8px; height: 8px; border-radius: 2px; animation: confettiFall linear forwards; }
@keyframes confettiFall {
  0%   { transform: translateY(-10px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

/* ── CONTACT PAGE ─────────────────────────────────────────────── */
.contact-page { padding: 3rem 0 5rem; }
.contact-hero { text-align: center; margin-bottom: 3rem; padding: 3rem 1rem 1rem; }
.contact-hero h1 { margin-bottom: 0.75rem; }
.contact-hero-sub { color: var(--text-2); font-size: 1rem; max-width: 560px; margin: 0 auto; }
.contact-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 2rem; margin-bottom: 3rem; align-items: start; }
.founder-card, .form-card { padding: 2rem; }
.founder-top { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.founder-avatar { width: 64px; height: 64px; border-radius: 50%; background: linear-gradient(135deg, var(--teal), var(--accent-2)); display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-size: 1.1rem; font-weight: 800; color: #0a0d14; flex-shrink: 0; }
.founder-name { font-size: 1.05rem; font-weight: 700; display: block; }
.founder-role { font-size: 0.8rem; color: var(--text-2); }
.founder-info { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 1.5rem; }
.info-row { display: flex; align-items: flex-start; gap: 0.75rem; }
.info-icon { font-size: 1rem; margin-top: 0.1rem; flex-shrink: 0; }
.info-label { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); display: block; }
.info-value { font-size: 0.875rem; color: var(--text-2); }
.founder-quote { border-left: 3px solid var(--accent); padding-left: 1rem; margin: 0; }
.founder-quote p, .founder-quote { font-size: 0.875rem; color: var(--text-2); font-style: italic; line-height: 1.7; }
.founder-quote cite { display: block; font-size: 0.8rem; color: var(--text-3); font-style: normal; margin-top: 0.5rem; }
.form-card h2 { margin-bottom: 0.35rem; }
.form-intro { font-size: 0.85rem; color: var(--text-2); margin-bottom: 1.5rem; }
.field-group { margin-bottom: 1rem; }
.field-group label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--text-2); margin-bottom: 0.4rem; }
.field-group input, .field-group select, .field-group textarea {
  width: 100%; padding: 0.75rem 1rem; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text); font-size: 0.9rem; font-family: var(--font-body);
  transition: var(--transition); outline: none; resize: vertical;
}
.field-group input:focus, .field-group select:focus, .field-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(126,212,201,0.12); }
.field-group select { cursor: pointer; }
.field-group select option { background: var(--bg2); }
.form-error { font-size: 0.82rem; color: var(--red); min-height: 1rem; margin-top: 0.5rem; }
.form-success { text-align: center; padding: 2rem; }
.success-emoji { font-size: 3rem; margin-bottom: 0.75rem; }
.form-success h3 { margin-bottom: 0.5rem; }
.form-success p { color: var(--text-2); font-size: 0.9rem; }
.faq-section { margin-top: 3rem; }
.faq-section h2 { margin-bottom: 1.5rem; }
.faq-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.faq-card { padding: 1.25rem 1.5rem; }
.faq-card h3 { font-size: 0.95rem; margin-bottom: 0.5rem; color: var(--accent); }
.faq-card p  { font-size: 0.85rem; color: var(--text-2); }

/* ── REVEAL ANIMATION ─────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ── RESPONSIVE ───────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-panel { display: none; }
  .contact-layout { grid-template-columns: 1fr; }
  .topic-tabs { overflow-x: auto; flex-wrap: nowrap; }
  .sec-tabs { flex-wrap: nowrap; overflow-x: auto; }
  .q-opts { grid-template-columns: 1fr; }
  .meta-inner { flex-direction: column; }
}
@media (max-width: 600px) {
  .header-inner { gap: 0.5rem; }
  .top-nav { display: none; }
  .mark-grid { grid-template-columns: 1fr; }
  .fc-grid { grid-template-columns: 1fr 1fr; }
  .dashboard-grid { grid-template-columns: 1fr 1fr; }
  
  .section-heading { flex-direction: column; }
  .footer-inner { flex-direction: column; }
  .footer-links { align-items: flex-start; }
}

/* ── MOBILE PROGRESS STRIP ──────────────────────────────────────────────── */
.mobile-progress-strip { margin-bottom: 2rem; }
.mobile-progress-strip .mps-card {
  padding: 1.25rem 1.5rem;
  background: linear-gradient(135deg, rgba(94,234,212,0.08), rgba(154,140,255,0.06));
  border: 1px solid rgba(94,234,212,0.2);
}
.mps-inner {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.mps-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  flex: 1;
  min-width: 70px;
  background: rgba(255,255,255,0.04);
  border-radius: 0.6rem;
  padding: 0.6rem 0.4rem;
  border: 1px solid rgba(255,255,255,0.07);
}
.mps-label {
  font-size: 0.7rem;
  color: #94a3b8;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.mps-stat strong {
  font-size: 0.95rem;
  color: var(--accent, #5eead4);
  font-weight: 800;
  font-family: 'Sora', sans-serif;
  white-space: nowrap;
}
.mps-bar-wrap { margin-top: 0.25rem; }
.mps-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: #94a3b8;
  margin-bottom: 0.4rem;
}

/* ── STEP 1: XP FLOAT ANIMATION ─────────────────────────────────────────── */
@keyframes xpPop {
  0%   { opacity:0; transform:translate(-50%,-50%) scale(0.3); }
  40%  { opacity:1; transform:translate(-50%,-50%) scale(1.15); }
  60%  { transform:translate(-50%,-50%) scale(0.95); }
  80%  { opacity:1; transform:translate(-50%,-60%) scale(1); }
  100% { opacity:0; transform:translate(-50%,-130%) scale(0.85); }
}
.xp-float {
  animation: xpPop 1.1s cubic-bezier(0.22,1,0.36,1) forwards !important;
}

/* ── STEP 2: QUIZ ANSWER ANIMATIONS ─────────────────────────────────────── */
@keyframes qPulse {
  0%   { transform:scale(1); box-shadow:0 0 0 0 rgba(94,234,212,0.7); }
  40%  { transform:scale(1.04); box-shadow:0 0 0 12px rgba(94,234,212,0.25); }
  100% { transform:scale(1); box-shadow:0 0 0 0 rgba(94,234,212,0); }
}
@keyframes qShake {
  0%,100% { transform:translateX(0); }
  15%  { transform:translateX(-8px); }
  30%  { transform:translateX(7px); }
  45%  { transform:translateX(-6px); }
  60%  { transform:translateX(5px); }
  75%  { transform:translateX(-3px); }
  90%  { transform:translateX(2px); }
}
@keyframes fbPop {
  0%   { transform:scaleY(0); opacity:0; }
  60%  { transform:scaleY(1.05); opacity:1; }
  100% { transform:scaleY(1); opacity:1; }
}
.q-pulse { animation: qPulse 0.6s ease-out forwards; }
.q-shake { animation: qShake 0.5s ease-out forwards; }
.q-fb-pop { animation: fbPop 0.35s cubic-bezier(0.34,1.56,0.64,1) forwards; transform-origin:top; }
.q-correct { background: rgba(94,234,212,0.18) !important; border-color: #5eead4 !important; }
.q-wrong   { background: rgba(248,113,113,0.18) !important; border-color: #f87171 !important; }

/* ── STEP 3: MODULE MASTERY STARS ────────────────────────────────────────── */
.mod-stars { display:flex; gap:2px; align-items:center; }
.mod-star {
  font-size:1.1rem;
  color: rgba(255,255,255,0.15);
  transition: color 0.3s ease, text-shadow 0.3s ease;
  line-height:1;
}
.mod-star-lit {
  color: #fbbf24;
  text-shadow: 0 0 8px rgba(251,191,36,0.7), 0 0 20px rgba(251,191,36,0.3);
  animation: starPop 0.4s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes starPop {
  0%   { transform:scale(0); opacity:0; }
  60%  { transform:scale(1.3); }
  100% { transform:scale(1); opacity:1; }
}
.mod-card-top {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* ── STEP 4: 3D FLASHCARD FLIP ───────────────────────────────────────────── */
.flashcard-3d {
  perspective: 1000px;
  cursor: pointer;
  min-height: 160px;
  border-radius: 1rem;
}
.fc-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 160px;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.4,0,0.2,1);
  border-radius: 1rem;
}
.flashcard-3d.flipped .fc-inner {
  transform: rotateY(180deg);
}
.fc-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 1rem;
  padding: 1.25rem 1.4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.5rem;
  min-height: 160px;
}
.fc-face-front {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(94,234,212,0.2);
}
.fc-face-front:hover {
  border-color: rgba(94,234,212,0.45);
  background: rgba(94,234,212,0.05);
}
.fc-face-back {
  background: rgba(94,234,212,0.08);
  border: 1px solid rgba(94,234,212,0.35);
  transform: rotateY(180deg);
}
.fc-face h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #e2e8f0;
  margin: 0;
  line-height: 1.5;
}
.fc-face p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.7;
  margin: 0;
}
.fc-flip-icon {
  font-size: 0.75rem;
  color: #64748b;
  margin-top: auto;
  text-align: right;
  align-self: flex-end;
}
.fc-chip-back { background: rgba(94,234,212,0.15) !important; color: #5eead4 !important; }
.flashcard-3d:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
/* Override old flashcard styles */
.flashcard { display:none; }

/* ── STEP 5: PERSONAL BEST ───────────────────────────────────────────────── */
.quiz-head { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:0.5rem; margin-bottom:1rem; }
.quiz-head-right { display:flex; align-items:center; gap:0.6rem; flex-wrap:wrap; }
.pb-pill {
  background: linear-gradient(135deg, rgba(251,191,36,0.15), rgba(251,191,36,0.08));
  border: 1px solid rgba(251,191,36,0.4);
  color: #fbbf24;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  border-radius: 2rem;
  white-space: nowrap;
  animation: pbGlow 2s ease-in-out infinite alternate;
}
@keyframes pbGlow {
  from { box-shadow: 0 0 4px rgba(251,191,36,0.2); }
  to   { box-shadow: 0 0 12px rgba(251,191,36,0.5); }
}

/* ── STEP 6: LEADERBOARD ─────────────────────────────────────────────────── */
.lb-card { padding: 1.5rem 2rem; }
.lb-list { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1rem; }
.lb-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  transition: all 0.2s ease;
}
.lb-row:hover { background: rgba(94,234,212,0.06); border-color: rgba(94,234,212,0.2); }
.lb-first {
  background: linear-gradient(135deg, rgba(251,191,36,0.12), rgba(251,191,36,0.05));
  border-color: rgba(251,191,36,0.35);
}
.lb-rank { font-size: 1.3rem; min-width: 2rem; text-align: center; }
.lb-name { flex: 1; font-weight: 700; color: #e2e8f0; font-size: 0.95rem; }
.lb-pts {
  font-weight: 800;
  font-family: 'Sora', sans-serif;
  color: var(--accent, #5eead4);
  font-size: 0.9rem;
}
.lb-loading, .lb-empty { color: #64748b; font-size: 0.9rem; text-align: center; padding: 1rem 0; }
.lb-footer { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 0.75rem; font-size: 0.8rem; color: #64748b; text-align: center; }

/* ── STEP 7: ALMOST THERE NUDGE ─────────────────────────────────────────── */
@keyframes nudgeSlide {
  0%   { opacity:0; transform:translateY(20px) scale(0.95); }
  100% { opacity:1; transform:translateY(0) scale(1); }
}
#almost-nudge .almost-inner {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--card, #161b27);
  border: 1px solid rgba(94,234,212,0.4);
  border-radius: 1rem;
  padding: 1rem 1.25rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(94,234,212,0.1);
}
.almost-icon { font-size: 1.5rem; flex-shrink: 0; margin-top: 0.1rem; }
#almost-nudge strong { font-size: 0.95rem; color: #e2e8f0; display: block; margin-bottom: 0.25rem; }
#almost-nudge p { font-size: 0.82rem; color: #94a3b8; margin: 0; line-height: 1.5; }
#almost-nudge strong em, #almost-nudge p strong { color: var(--accent, #5eead4); }
.almost-close {
  background: none;
  border: none;
  color: #64748b;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0;
  flex-shrink: 0;
  line-height: 1;
  margin-left: auto;
}
.almost-close:hover { color: #fff; }

/* ── STEP 8: MODULE COMPLETE OVERLAY ────────────────────────────────────── */
#mod-complete-overlay {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  animation: fadeInBg 0.3s ease forwards;
  padding: 1rem;
}
@keyframes fadeInBg { from{opacity:0} to{opacity:1} }
.mco-box {
  max-width: 480px;
  width: 100%;
  padding: 2.5rem 2rem;
  text-align: center;
  animation: mcoSlideUp 0.45s cubic-bezier(0.34,1.56,0.64,1) forwards;
  border: 1px solid rgba(94,234,212,0.3);
}
@keyframes mcoSlideUp {
  from { opacity:0; transform:translateY(40px) scale(0.92); }
  to   { opacity:1; transform:translateY(0) scale(1); }
}
.mco-fireworks { font-size: 3.5rem; margin-bottom: 0.5rem; animation: spin 1s ease-out; }
@keyframes spin { from{transform:rotate(-20deg) scale(0.5)} to{transform:rotate(0) scale(1)} }
.mco-title {
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 800;
  background: linear-gradient(135deg, #5eead4, #9a8cff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0 0 0.35rem;
}
.mco-mod { color: #94a3b8; font-size: 0.95rem; margin: 0 0 1.5rem; }
.mco-stats {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.mco-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.75rem;
  padding: 0.6rem 1.1rem;
  min-width: 90px;
}
.mco-val { font-family:'Sora',sans-serif; font-size:1.3rem; font-weight:800; color:var(--accent,#5eead4); }
.mco-label { font-size:0.72rem; color:#64748b; margin-top:0.15rem; text-transform:uppercase; letter-spacing:0.05em; }
.mco-badge { font-size: 1rem; color: #94a3b8; margin-bottom: 1.5rem; }
.mco-actions { display: flex; flex-direction: column; gap: 0.65rem; }
.mco-next { width: 100%; }
.mco-close { width: 100%; }

/* ── STEP 9: STREAK FLAMES ───────────────────────────────────────────────── */
.streak-warm {
  color: #fb923c !important;
  text-shadow: 0 0 10px rgba(251,146,60,0.6);
  animation: flameFlicker 1.5s ease-in-out infinite alternate;
}
.streak-hot {
  color: #ef4444 !important;
  text-shadow: 0 0 16px rgba(239,68,68,0.8), 0 0 30px rgba(251,146,60,0.4);
  animation: flameFlicker 0.8s ease-in-out infinite alternate;
}
@keyframes flameFlicker {
  from { text-shadow: 0 0 8px rgba(239,68,68,0.6), 0 0 20px rgba(251,146,60,0.3); transform: scale(1); }
  to   { text-shadow: 0 0 18px rgba(239,68,68,0.9), 0 0 35px rgba(251,146,60,0.6); transform: scale(1.05); }
}

/* ── STEP 10: CHALLENGE COUNTDOWN ───────────────────────────────────────── */
.challenge-countdown {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  font-size: 0.8rem;
}
.cc-label { color: #64748b; }
.cc-timer {
  font-family: 'Sora', sans-serif;
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--accent, #5eead4);
  letter-spacing: 0.05em;
  font-variant-numeric: tabular-nums;
  transition: color 0.3s;
}

/* ── STEP 11: PROGRESS RING ──────────────────────────────────────────────── */
.ring-wrap {
  position: relative;
  width: 110px;
  height: 110px;
  margin: 0.5rem auto 0;
}
.progress-ring {
  width: 110px;
  height: 110px;
  transform: rotate(-90deg);
}
.ring-bg {
  fill: none;
  stroke: rgba(255,255,255,0.07);
  stroke-width: 8;
}
.ring-fill {
  fill: none;
  stroke: url(#ringGrad);
  stroke: #5eead4;
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.8s cubic-bezier(0.4,0,0.2,1);
  filter: drop-shadow(0 0 6px rgba(94,234,212,0.6));
}
.ring-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.ring-pct {
  font-family: 'Sora', sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent, #5eead4);
  line-height: 1;
}
.ring-label {
  font-size: 0.6rem;
  color: #64748b;
  text-align: center;
  margin-top: 0.15rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ── STEP 8: MODULE COMPLETE OVERLAY ────────────────────────────────────── */
#mod-complete-overlay {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(8px);
  animation: overlayFadeIn 0.3s ease forwards;
  padding: 1rem;
}
@keyframes overlayFadeIn {
  from { opacity:0; }
  to   { opacity:1; }
}
.mco-box {
  max-width: 480px;
  width: 100%;
  padding: 2.5rem 2rem;
  text-align: center;
  border: 1px solid rgba(94,234,212,0.3);
  animation: mcoSlideUp 0.4s cubic-bezier(0.34,1.56,0.64,1) forwards;
}
@keyframes mcoSlideUp {
  from { transform:translateY(40px) scale(0.95); opacity:0; }
  to   { transform:translateY(0) scale(1); opacity:1; }
}
.mco-fireworks {
  font-size: 3.5rem;
  animation: bounce 0.6s ease infinite alternate;
  display: block;
  margin-bottom: 0.5rem;
}
@keyframes bounce {
  from { transform: translateY(0); }
  to   { transform: translateY(-10px); }
}
.mco-title {
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 800;
  color: var(--accent, #5eead4);
  margin: 0 0 0.35rem;
}
.mco-mod {
  color: #94a3b8;
  font-size: 0.9rem;
  margin: 0 0 1.5rem;
}
.mco-stats {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.mco-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.75rem;
  padding: 0.75rem 1.25rem;
  min-width: 90px;
}
.mco-val {
  font-family: 'Sora', sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  color: #e2e8f0;
}
.mco-label {
  font-size: 0.72rem;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}
.mco-badge {
  font-size: 1rem;
  color: #fbbf24;
  margin-bottom: 1.5rem;
  font-weight: 700;
}
.mco-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.mco-next { width: 100%; }
.mco-close {
  background: none;
  border: 1px solid rgba(255,255,255,0.12);
  color: #94a3b8;
  padding: 0.6rem 1rem;
  border-radius: 0.6rem;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.875rem;
  transition: all 0.2s;
}
.mco-close:hover { border-color: rgba(255,255,255,0.25); color: #e2e8f0; }

/* ── STEP 9: STREAK FLAMES ───────────────────────────────────────────────── */
@keyframes flamePulse {
  0%,100% { text-shadow: 0 0 6px rgba(251,146,60,0.5); transform:scale(1); }
  50%      { text-shadow: 0 0 18px rgba(251,146,60,0.9); transform:scale(1.06); }
}
@keyframes flameInferno {
  0%,100% { text-shadow: 0 0 10px rgba(239,68,68,0.6), 0 0 25px rgba(251,146,60,0.4); transform:scale(1); }
  50%      { text-shadow: 0 0 20px rgba(239,68,68,1), 0 0 40px rgba(251,146,60,0.7); transform:scale(1.1); }
}
@keyframes volcanoShake {
  0%,100% { transform:scale(1) rotate(0deg); }
  25%     { transform:scale(1.08) rotate(-2deg); }
  75%     { transform:scale(1.08) rotate(2deg); }
}
.streak-low     { color: #fb923c; }
.streak-warm    { color: #f97316; animation: flamePulse 2s ease-in-out infinite; }
.streak-hot     { color: #ef4444; animation: flamePulse 1.5s ease-in-out infinite; font-weight:800; }
.streak-inferno { color: #dc2626; animation: flameInferno 1.2s ease-in-out infinite; font-weight:800; }
.streak-volcano { color: #ff0000; animation: volcanoShake 0.8s ease-in-out infinite; font-weight:800; font-size:1.1em; }

/* Streak milestone toast */
.streak-milestone {
  position: fixed;
  top: 5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1200;
  animation: milestoneIn 0.5s cubic-bezier(0.34,1.56,0.64,1) forwards;
  pointer-events: none;
}
@keyframes milestoneIn {
  from { opacity:0; transform:translateX(-50%) translateY(-20px) scale(0.8); }
  to   { opacity:1; transform:translateX(-50%) translateY(0) scale(1); }
}
.sm-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--card, #161b27);
  border: 2px solid rgba(251,146,60,0.6);
  border-radius: 1rem;
  padding: 1rem 1.5rem;
  box-shadow: 0 8px 40px rgba(251,146,60,0.3);
  white-space: nowrap;
}
.sm-fire { font-size: 2rem; }
.sm-inner strong { display:block; font-size:1rem; color:#e2e8f0; font-weight:800; }
.sm-inner p { font-size:0.82rem; color:#94a3b8; margin:0; }

/* ── STEP 10: CHALLENGE COUNTDOWN ───────────────────────────────────────── */
.challenge-countdown {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.6rem;
  font-size: 0.8rem;
}
.cc-label { color: #64748b; font-weight: 600; }
.cc-timer {
  font-family: 'Sora', monospace;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--accent, #5eead4);
  letter-spacing: 0.05em;
  transition: color 0.3s ease;
}

/* ── STEP 11: PROGRESS RING ENHANCEMENTS ─────────────────────────────────── */
.progress-ring {
  transform: rotate(-90deg);
  width: 110px;
  height: 110px;
}
.ring-fill {
  stroke: url(#ringGrad);
  filter: drop-shadow(0 0 6px rgba(94,234,212,0.5));
  transition: stroke-dashoffset 0.9s cubic-bezier(0.4,0,0.2,1) !important;
}
/* Add gradient to ring via SVG defs injection */
.ring-wrap::after {
  content: '';
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(94,234,212,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.ring-pct {
  background: linear-gradient(135deg, #5eead4, #9a8cff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── STEP 12: SHARE SCORE CARD ───────────────────────────────────────────── */
#share-card-overlay {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  padding: 1rem;
  animation: overlayFadeIn 0.3s ease forwards;
}
.sc-box {
  max-width: 380px;
  width: 100%;
  padding: 1.5rem;
  position: relative;
  text-align: center;
  border: 1px solid rgba(94,234,212,0.25);
  animation: mcoSlideUp 0.4s cubic-bezier(0.34,1.56,0.64,1) forwards;
}
.sc-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: none;
  border: none;
  color: #64748b;
  cursor: pointer;
  font-size: 1rem;
  padding: 0.25rem 0.5rem;
}
.sc-card {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  border: 1px solid rgba(94,234,212,0.3);
  border-radius: 1rem;
  padding: 1.5rem;
  margin-bottom: 1rem;
}
.sc-logo {
  font-family: 'Sora', sans-serif;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.75rem;
}
.sc-logo span { color: var(--accent, #5eead4); }
.sc-emoji { font-size: 2.5rem; margin-bottom: 0.25rem; }
.sc-score {
  font-family: 'Sora', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent, #5eead4);
  line-height: 1;
}
.sc-pct {
  font-size: 1rem;
  color: #94a3b8;
  margin-bottom: 0.5rem;
}
.sc-module {
  font-size: 0.85rem;
  font-weight: 700;
  color: #e2e8f0;
  margin-bottom: 0.5rem;
}
.sc-tag {
  font-size: 0.7rem;
  color: #475569;
  margin-top: 0.5rem;
}
.sc-hint {
  font-size: 0.82rem;
  color: #64748b;
  margin-bottom: 1rem;
}
.sc-btns { display: flex; flex-direction: column; gap: 0.6rem; }
.sc-share-btn { width: 100%; }
.sc-close-btn {
  background: none;
  border: 1px solid rgba(255,255,255,0.1);
  color: #64748b;
  padding: 0.55rem;
  border-radius: 0.6rem;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
}

/* ── STEP 13: WEEKLY LEADERBOARD TABS ───────────────────────────────────── */
.lb-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.lb-tab {
  flex: 1;
  padding: 0.55rem 1rem;
  border: 1px solid rgba(255,255,255,0.1);
  background: none;
  color: #94a3b8;
  border-radius: 0.6rem;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.15s ease;
}
.lb-tab.active {
  background: var(--accent, #5eead4);
  color: #0d1117;
  border-color: var(--accent, #5eead4);
  font-weight: 700;
}
.lb-tab:hover:not(.active) {
  border-color: rgba(255,255,255,0.25);
  color: #e2e8f0;
}
.lb-list { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1rem; }

/* ── STEP 14: SPACED REPETITION NUDGE ───────────────────────────────────── */
#rep-nudge {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  z-index: 997;
  max-width: 360px;
  width: calc(100vw - 3rem);
  animation: nudgeSlide 0.4s cubic-bezier(0.34,1.56,0.64,1) forwards;
}
.rep-inner {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 0.75rem;
  background: var(--card, #161b27);
  border: 1px solid rgba(251,191,36,0.35);
  border-radius: 1rem;
  padding: 1rem 1rem 1rem 1.1rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.rep-icon { font-size: 1.4rem; }
.rep-text strong { font-size: 0.88rem; color: #e2e8f0; display: block; }
.rep-text p { font-size: 0.78rem; color: #94a3b8; margin: 0.1rem 0 0; line-height: 1.4; }
.rep-text em { color: #fbbf24; font-style: normal; font-weight: 600; }
.rep-btn {
  font-size: 0.78rem !important;
  padding: 0.4rem 0.7rem !important;
  white-space: nowrap;
}
.rep-close {
  background: none;
  border: none;
  color: #64748b;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0;
}
.rep-close:hover { color: #fff; }

/* ── STEP 11: PROGRESS RING POLISH ───────────────────────────────────────── */
.ring-bg {
  fill: none;
  stroke: rgba(255,255,255,0.06);
  stroke-width: 8;
}
.ring-fill {
  fill: none;
  stroke: url(#ringGrad);
  stroke-width: 8;
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
  transition: stroke-dashoffset 0.8s cubic-bezier(0.4,0,0.2,1);
  filter: drop-shadow(0 0 6px rgba(94,234,212,0.5));
}
.progress-ring { overflow: visible; }
.ring-pct {
  font-family: 'Sora', sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent, #5eead4);
  display: block;
  line-height: 1;
}
.ring-label {
  font-size: 0.65rem;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  display: block;
  margin-top: 0.2rem;
}

/* ── STEP 12: SHARE SCORE CARD ───────────────────────────────────────────── */
#share-card-overlay {
  position: fixed;
  inset: 0;
  z-index: 1050;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  animation: overlayFadeIn 0.3s ease forwards;
  padding: 1rem;
}
.sc-box {
  max-width: 400px;
  width: 100%;
  padding: 2rem;
  text-align: center;
  border: 1px solid rgba(94,234,212,0.25);
  animation: mcoSlideUp 0.4s cubic-bezier(0.34,1.56,0.64,1) forwards;
}
.sc-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: #e2e8f0;
  margin: 0 0 1.25rem;
}
.sc-card {
  background: linear-gradient(135deg, rgba(94,234,212,0.1), rgba(154,140,255,0.1));
  border: 1px solid rgba(94,234,212,0.2);
  border-radius: 1rem;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}
.sc-score {
  font-family: 'Sora', sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent, #5eead4);
  line-height: 1;
}
.sc-stars { font-size: 1.5rem; margin: 0.4rem 0; }
.sc-mod { font-size: 0.9rem; font-weight: 700; color: #e2e8f0; margin: 0.25rem 0 0; }
.sc-brand { font-size: 0.75rem; color: #64748b; margin: 0.25rem 0 0; }
.sc-actions { display: flex; flex-direction: column; gap: 0.6rem; }
.sc-copy, .sc-wa { width: 100%; font-size: 0.9rem; }
.sc-wa { background: linear-gradient(135deg, #25d366, #128c7e); text-decoration: none; display: flex; align-items: center; justify-content: center; }
.sc-close { background: none; border: 1px solid rgba(255,255,255,0.1); color: #64748b; padding: 0.6rem; border-radius: 0.6rem; cursor: pointer; font-family: inherit; font-size: 0.85rem; transition: all 0.2s; }
.sc-close:hover { color: #e2e8f0; border-color: rgba(255,255,255,0.25); }
.sc-copied { color: var(--accent); font-size: 0.85rem; margin-top: 0.5rem; }

/* ── STEP 13: WEEKLY LEADERBOARD TABS ───────────────────────────────────── */
.lb-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  background: rgba(255,255,255,0.03);
  border-radius: 0.75rem;
  padding: 0.3rem;
  border: 1px solid rgba(255,255,255,0.06);
}
.lb-tab {
  flex: 1;
  padding: 0.55rem 0.75rem;
  border: none;
  border-radius: 0.55rem;
  background: none;
  color: #64748b;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}
.lb-tab.active {
  background: var(--accent, #5eead4);
  color: #0d1117;
  font-weight: 700;
}
.lb-tab:hover:not(.active) { color: #e2e8f0; background: rgba(255,255,255,0.06); }
.lb-list { display: flex; flex-direction: column; gap: 0.5rem; }

/* ── STEP 14: SPACED REPETITION NUDGE ───────────────────────────────────── */
.fading-inner {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--card, #161b27);
  border: 1px solid rgba(251,191,36,0.35);
  border-radius: 1rem;
  padding: 1rem 1.25rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(251,191,36,0.1);
}
.fading-icon { font-size: 1.5rem; flex-shrink: 0; }
#fading-nudge strong { font-size: 0.9rem; color: #fbbf24; display: block; margin-bottom: 0.2rem; }
#fading-nudge p { font-size: 0.8rem; color: #94a3b8; margin: 0; line-height: 1.5; }
#fading-nudge em { color: #e2e8f0; font-style: normal; font-weight: 600; }

/* ── STEP 15: SOUND TOGGLE ───────────────────────────────────────────────── */
.sound-toggle {
  background: none;
  border: 1px solid rgba(255,255,255,0.12);
  color: #94a3b8;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 2rem;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.sound-toggle:hover {
  border-color: var(--accent, #5eead4);
  color: var(--accent, #5eead4);
}

/* ── STEP 16: LIGHT MODE ─────────────────────────────────────────────────── */
:root.light-mode {
  --bg:      #f1f5f9;
  --card:    #ffffff;
  --text:    #1e293b;
  --text-2:  #475569;
  --border:  rgba(0,0,0,0.08);
  --accent:  #0d9488;
}
:root.light-mode body {
  background: #f1f5f9;
  color: #1e293b;
}
:root.light-mode .glass-card {
  background: #ffffff;
  border-color: rgba(0,0,0,0.08);
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}
:root.light-mode .site-header {
  background: rgba(255,255,255,0.92);
  border-bottom: 1px solid rgba(0,0,0,0.08);
}
:root.light-mode .top-nav a,
:root.light-mode .brand {
  color: #1e293b;
}
:root.light-mode .brand span { color: var(--accent); }
:root.light-mode .hero-text,
:root.light-mode .section-sub,
:root.light-mode p { color: #475569; }
:root.light-mode h1, :root.light-mode h2,
:root.light-mode h3, :root.light-mode strong { color: #0f172a; }
:root.light-mode .mod-card {
  background: #f8fafc;
  border-color: rgba(0,0,0,0.08);
  color: #1e293b;
}
:root.light-mode .mod-card:hover { border-color: var(--accent); background: #f0fdfa; }
:root.light-mode .q-opt {
  background: #f8fafc;
  border-color: rgba(0,0,0,0.12);
  color: #1e293b;
}
:root.light-mode .q-opt:hover { border-color: var(--accent); background: #f0fdfa; }
:root.light-mode .sec-tab {
  background: #f1f5f9;
  border-color: rgba(0,0,0,0.08);
  color: #475569;
}
:root.light-mode .sec-tab.active { background: var(--accent); color: #fff; }
:root.light-mode .learn-text { color: #1e293b; }
:root.light-mode .learn-text h4 { color: var(--accent); border-color: rgba(13,148,136,0.2); }
:root.light-mode .info-bar { background: rgba(255,255,255,0.95); border-color: rgba(0,0,0,0.06); }
:root.light-mode .fc-face-front { background: #f8fafc; border-color: rgba(13,148,136,0.2); }
:root.light-mode .fc-face-back { background: #f0fdfa; border-color: rgba(13,148,136,0.35); }
:root.light-mode .fc-face h4, :root.light-mode .fc-face p { color: #1e293b; }
:root.light-mode .bg-grid { opacity: 0.03; }
:root.light-mode .bg-orb { opacity: 0.06; }
:root.light-mode .primary-btn { color: #0f172a; }
:root.light-mode .dash-box { background: #f8fafc; border-color: rgba(0,0,0,0.08); }
:root.light-mode .dash-label { color: #64748b; }
:root.light-mode .ability-bar { background: #f8fafc; }
:root.light-mode .topic-tab { background: #f1f5f9; color: #475569; border-color: rgba(0,0,0,0.08); }
:root.light-mode .topic-tab.active { background: var(--accent); color: #fff; }
:root.light-mode .mark-card { background: #f8fafc; border-color: rgba(0,0,0,0.08); }
:root.light-mode .site-footer { background: #e2e8f0; border-color: rgba(0,0,0,0.08); }
:root.light-mode .footer-brand span { color: var(--accent); }

/* ── FREE FOREVER BADGE ──────────────────────────────────────────────────── */
.free-forever-badge {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.fff-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.9rem;
  border-radius: 2rem;
  font-size: 0.8rem;
  font-weight: 700;
  background: rgba(94,234,212,0.1);
  border: 1px solid rgba(94,234,212,0.3);
  color: #5eead4;
  white-space: nowrap;
}
.fff-pill-2 {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.1);
  color: #94a3b8;
}

/* ── BUY ME A COFFEE SECTION ─────────────────────────────────────────────── */
.coffee-card {
  padding: 2rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  border: 1px solid rgba(251,191,36,0.15);
  background: linear-gradient(135deg, rgba(251,191,36,0.04), rgba(251,191,36,0.02));
}
.coffee-left { flex: 1; min-width: 260px; }
.coffee-left h2 { margin-bottom: 0.75rem; }
.coffee-left p { color: var(--text-2, #94a3b8); font-size: 0.92rem; line-height: 1.7; margin-bottom: 0.5rem; }
.coffee-sub { font-size: 0.85rem !important; color: #64748b !important; }
.coffee-right { display: flex; flex-direction: column; align-items: center; gap: 0.6rem; flex-shrink: 0; }
.coffee-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.8rem;
  border-radius: 0.85rem;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #1a1a1a;
  font-weight: 800;
  font-size: 0.95rem;
  text-decoration: none;
  font-family: 'Sora', sans-serif;
  transition: all 0.2s ease;
  box-shadow: 0 4px 20px rgba(251,191,36,0.3);
  white-space: nowrap;
}
.coffee-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(251,191,36,0.45);
}
.coffee-note { font-size: 0.75rem; color: #64748b; text-align: center; }

/* ── MOBILE FONT SIZE FIXES ──────────────────────────────────────────────── */
@media (max-width: 640px) {
  html { font-size: 16px; }

  /* Hero */
  .hero-title { font-size: clamp(1.8rem, 8vw, 2.5rem) !important; }
  .hero-text { font-size: 0.95rem !important; line-height: 1.7; }

  /* Module cards */
  .mod-title { font-size: 0.9rem !important; }
  .mod-card { padding: 0.9rem 1rem !important; }

  /* Quiz */
  .q-text { font-size: 0.92rem !important; line-height: 1.6; }
  .q-opt { font-size: 0.88rem !important; padding: 0.75rem 0.9rem !important; }
  .q-fb { font-size: 0.85rem !important; }

  /* Flashcards */
  .fc-face h4 { font-size: 0.88rem !important; }
  .fc-face p { font-size: 0.83rem !important; }
  .flashcard-3d { min-height: 140px; }
  .fc-inner { min-height: 140px; }
  .fc-face { min-height: 140px; }

  /* Recap/Learn text */
  .learn-text { font-size: 0.9rem !important; line-height: 1.75 !important; }
  .learn-text h4 { font-size: 0.95rem !important; }

  /* Dashboard */
  .dash-box { padding: 0.6rem 0.75rem !important; }
  .dash-val { font-size: 1.1rem !important; }
  .dash-label { font-size: 0.65rem !important; }

  /* Section tabs */
  .sec-tab { font-size: 0.78rem !important; padding: 0.5rem 0.6rem !important; }

  /* Exam practice */
  .mark-q { font-size: 0.9rem !important; }
  .mark-card { padding: 1rem !important; }

  /* Info bar */
  .info-bar-inner { flex-wrap: wrap; gap: 0.5rem; }
  .rating-group { flex-wrap: wrap; }

  /* Leaderboard */
  .lb-name { font-size: 0.85rem !important; }
  .lb-pts { font-size: 0.82rem !important; }

  /* Coffee card */
  .coffee-card { padding: 1.5rem !important; text-align: center; }
  .coffee-right { width: 100%; }
  .coffee-btn { width: 100%; justify-content: center; }

  /* Progress strip */
  .mps-stat { min-width: 60px !important; padding: 0.5rem 0.3rem !important; }
  .mps-stat strong { font-size: 0.85rem !important; }
  .mps-label { font-size: 0.62rem !important; }

  /* General text */
  p { font-size: 0.92rem; }
  li { font-size: 0.9rem; }
  th, td { font-size: 0.82rem !important; }
}

@media (max-width: 400px) {
  html { font-size: 15px; }
  .sec-tab { font-size: 0.72rem !important; padding: 0.45rem 0.5rem !important; }
  .hero-title { font-size: clamp(1.6rem, 9vw, 2rem) !important; }
}

/* ── STEP 5: PERSONAL BEST ───────────────────────────────────────────────── */
.quiz-head { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:0.5rem; margin-bottom:1rem; }
.quiz-head-right { display:flex; align-items:center; gap:0.6rem; flex-wrap:wrap; }
.pb-pill { background:linear-gradient(135deg,rgba(251,191,36,0.15),rgba(251,191,36,0.08)); border:1px solid rgba(251,191,36,0.4); color:#fbbf24; font-size:0.78rem; font-weight:700; padding:0.3rem 0.75rem; border-radius:2rem; white-space:nowrap; }

/* ── STEP 7: ALMOST THERE ───────────────────────────────────────────────── */
@keyframes nudgeSlide { from{opacity:0;transform:translateY(20px) scale(0.95);}to{opacity:1;transform:translateY(0) scale(1);} }
.almost-inner { display:flex; align-items:flex-start; gap:0.75rem; background:var(--card,#161b27); border:1px solid rgba(94,234,212,0.35); border-radius:1rem; padding:1rem 1.25rem; box-shadow:0 8px 32px rgba(0,0,0,0.5); }
.almost-icon { font-size:1.5rem; flex-shrink:0; }
.almost-inner strong { font-size:0.95rem; color:#e2e8f0; display:block; margin-bottom:0.25rem; }
.almost-inner p { font-size:0.82rem; color:#94a3b8; margin:0; line-height:1.5; }
.almost-inner p strong { color:var(--accent,#5eead4); }
.almost-close { background:none; border:none; color:#64748b; cursor:pointer; font-size:0.9rem; padding:0; flex-shrink:0; margin-left:auto; }
.almost-close:hover { color:#fff; }

/* ── STEP 8: MODULE COMPLETE OVERLAY ────────────────────────────────────── */
#mod-complete-overlay { position:fixed; inset:0; z-index:1100; display:flex; align-items:center; justify-content:center; background:rgba(0,0,0,0.75); backdrop-filter:blur(8px); padding:1rem; animation:overlayFadeIn 0.3s ease forwards; }
@keyframes overlayFadeIn { from{opacity:0;}to{opacity:1;} }
.mco-box { max-width:480px; width:100%; padding:2.5rem 2rem; text-align:center; border:1px solid rgba(94,234,212,0.3); animation:mcoSlideUp 0.4s cubic-bezier(0.34,1.56,0.64,1) forwards; }
@keyframes mcoSlideUp { from{transform:translateY(40px) scale(0.95);opacity:0;}to{transform:translateY(0) scale(1);opacity:1;} }
.mco-fireworks { font-size:3.5rem; animation:bounce 0.6s ease infinite alternate; display:block; margin-bottom:0.5rem; }
@keyframes bounce { from{transform:translateY(0);}to{transform:translateY(-10px);} }
.mco-title { font-family:'Sora',sans-serif; font-size:clamp(1.6rem,4vw,2.2rem); font-weight:800; color:var(--accent,#5eead4); margin:0 0 0.35rem; }
.mco-mod { color:#94a3b8; font-size:0.9rem; margin:0 0 1.5rem; }
.mco-stats { display:flex; justify-content:center; gap:1.5rem; margin-bottom:1.25rem; flex-wrap:wrap; }
.mco-stat { display:flex; flex-direction:column; align-items:center; gap:0.2rem; background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.08); border-radius:0.75rem; padding:0.75rem 1.25rem; min-width:90px; }
.mco-val { font-family:'Sora',sans-serif; font-size:1.3rem; font-weight:800; color:#e2e8f0; }
.mco-label { font-size:0.72rem; color:#64748b; text-transform:uppercase; letter-spacing:0.06em; font-weight:600; }
.mco-badge { font-size:1rem; color:#fbbf24; margin-bottom:1.5rem; font-weight:700; }
.mco-actions { display:flex; flex-direction:column; gap:0.75rem; }
.mco-next { width:100%; }
.mco-close { background:none; border:1px solid rgba(255,255,255,0.12); color:#94a3b8; padding:0.6rem 1rem; border-radius:0.6rem; cursor:pointer; font-family:inherit; font-size:0.875rem; transition:all 0.2s; }
.mco-close:hover { border-color:rgba(255,255,255,0.25); color:#e2e8f0; }

/* ── STEP 9: STREAK FLAMES ───────────────────────────────────────────────── */
@keyframes flamePulse { 0%,100%{text-shadow:0 0 6px rgba(251,146,60,0.5);transform:scale(1);}50%{text-shadow:0 0 18px rgba(251,146,60,0.9);transform:scale(1.06);} }
@keyframes flameInferno { 0%,100%{text-shadow:0 0 10px rgba(239,68,68,0.6),0 0 25px rgba(251,146,60,0.4);}50%{text-shadow:0 0 20px rgba(239,68,68,1),0 0 40px rgba(251,146,60,0.7);transform:scale(1.1);} }
@keyframes volcanoShake { 0%,100%{transform:scale(1) rotate(0deg);}25%{transform:scale(1.08) rotate(-2deg);}75%{transform:scale(1.08) rotate(2deg);} }
.streak-low { color:#fb923c; }
.streak-warm { color:#f97316; animation:flamePulse 2s ease-in-out infinite; }
.streak-hot { color:#ef4444; animation:flamePulse 1.5s ease-in-out infinite; font-weight:800; }
.streak-inferno { color:#dc2626; animation:flameInferno 1.2s ease-in-out infinite; font-weight:800; }
.streak-volcano { color:#ff0000; animation:volcanoShake 0.8s ease-in-out infinite; font-weight:800; }
.streak-milestone { position:fixed; top:5rem; left:50%; transform:translateX(-50%); z-index:1200; pointer-events:none; animation:milestoneIn 0.5s cubic-bezier(0.34,1.56,0.64,1) forwards; }
@keyframes milestoneIn { from{opacity:0;transform:translateX(-50%) translateY(-20px) scale(0.8);}to{opacity:1;transform:translateX(-50%) translateY(0) scale(1);} }
.sm-inner { display:flex; align-items:center; gap:1rem; background:var(--card,#161b27); border:2px solid rgba(251,146,60,0.6); border-radius:1rem; padding:1rem 1.5rem; box-shadow:0 8px 40px rgba(251,146,60,0.3); white-space:nowrap; }
.sm-fire { font-size:2rem; }
.sm-inner strong { display:block; font-size:1rem; color:#e2e8f0; font-weight:800; }
.sm-inner p { font-size:0.82rem; color:#94a3b8; margin:0; }

/* ── STEP 11: PROGRESS RING ──────────────────────────────────────────────── */
.ring-bg { fill:none; stroke:rgba(255,255,255,0.06); stroke-width:8; }
.ring-fill { fill:none; stroke:url(#ringGrad); stroke-width:8; stroke-linecap:round; transform:rotate(-90deg); transform-origin:50% 50%; transition:stroke-dashoffset 0.8s cubic-bezier(0.4,0,0.2,1); filter:drop-shadow(0 0 6px rgba(94,234,212,0.5)); }
.ring-pct { font-family:'Sora',sans-serif; font-size:1.3rem; font-weight:800; color:var(--accent,#5eead4); display:block; line-height:1; }
.ring-label { font-size:0.65rem; color:#64748b; text-transform:uppercase; letter-spacing:0.06em; font-weight:600; display:block; margin-top:0.2rem; }

/* ── CLEAN BORDERS (match coffee card style) ─────────────────────────────── */
.glass-card { border-radius: 1rem !important; }
.section-block { margin-bottom: 2.5rem; }

/* ── EDEXCEL CARD CLEAN BORDER ───────────────────────────────────────────── */
.edexcel-card {
  border-radius: 1rem !important;
  border: 1px solid rgba(167,139,250,0.2) !important;
  overflow: hidden;
}

/* ── LEVELS TRACK ────────────────────────────────────────────────────────── */
.levels-track {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.6rem;
}
.level-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.6rem;
  padding: 0.45rem 0.6rem;
  min-width: 68px;
  text-align: center;
  transition: all 0.2s;
}
.ls-final {
  border-color: rgba(251,191,36,0.3);
  background: rgba(251,191,36,0.06);
}
.ls-icon { font-size: 1.1rem; line-height: 1; }
.ls-name { font-size: 0.65rem; font-weight: 700; color: #e2e8f0; line-height: 1.2; }
.ls-pts  { font-size: 0.6rem; color: #64748b; font-weight: 600; }
.ls-arrow { color: #334155; font-size: 0.8rem; flex-shrink: 0; }
@media (max-width: 480px) {
  .levels-track { gap: 0.25rem; }
  .level-step { min-width: 56px; padding: 0.35rem 0.4rem; }
  .ls-name { font-size: 0.58rem; }
}

/* ── LEVELS NOTE ─────────────────────────────────────────────────────────── */
.levels-note {
  font-size: 0.72rem;
  color: #64748b;
  margin-top: 0.6rem;
  margin-bottom: 0;
}
.dash-label { font-size: 0.72rem; font-weight: 700; color: var(--accent,#5eead4); text-transform: uppercase; letter-spacing: 0.08em; display: block; margin-bottom: 0.4rem; }

/* ── CMD-CARD FLIP (Command Words) ──────────────────────────────────────── */
.cmd-card {
  perspective: 1000px;
  cursor: pointer;
  min-height: 160px;
  border-radius: 1rem;
}
.cmd-inner {
  position: relative;
  width: 100%;
  min-height: 160px;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.4,0,0.2,1);
  border-radius: 1rem;
}
.cmd-card.flipped .cmd-inner { transform: rotateY(180deg); }
.cmd-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 1rem;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.5rem;
  min-height: 160px;
  overflow: hidden;
}
.cmd-front {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(94,234,212,0.2);
}
.cmd-back {
  background: rgba(94,234,212,0.08);
  border: 1px solid rgba(94,234,212,0.35);
  transform: rotateY(180deg);
}
.cmd-mark { font-size: 0.7rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em; }
.cmd-mark.low { color: #5eead4; }
.cmd-mark.mid { color: #f97316; }
.cmd-mark.high { color: #f87171; }
.cmd-front h4 { font-size: 1rem; font-weight: 800; color: #e2e8f0; margin: 0; }
.cmd-hint { font-size: 0.72rem; color: #64748b; margin-top: auto; }
.cmd-back p { font-size: 0.82rem; color: #cbd5e1; line-height: 1.6; margin: 0; overflow: hidden; }
.cmd-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ── FLASHCARD TEXT FIT — prevent overflow ───────────────────────────────── */
.fc-face {
  overflow: hidden;
  word-break: break-word;
}
.fc-face h4 {
  font-size: clamp(0.78rem, 2vw, 0.95rem) !important;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.fc-face p {
  font-size: clamp(0.75rem, 1.8vw, 0.88rem) !important;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 6;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.flashcard-3d { min-height: 180px; }
.fc-inner { min-height: 180px; }
.fc-face { min-height: 180px; padding: 1rem 1.1rem; }

/* ── LEADERBOARD ─────────────────────────────────────────────────────────── */
.lb-card { padding: 1.5rem; }
.lb-list { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1rem; }
.lb-row { display: flex; align-items: center; gap: 1rem; padding: 0.75rem 1rem; border-radius: 0.75rem; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06); }
.lb-first { background: linear-gradient(135deg,rgba(251,191,36,0.12),rgba(251,191,36,0.05)); border-color: rgba(251,191,36,0.35); }
.lb-rank { font-size: 1.2rem; min-width: 2rem; text-align: center; }
.lb-name { flex: 1; font-weight: 700; color: #e2e8f0; font-size: 0.95rem; }
.lb-pts { font-weight: 800; color: var(--accent,#5eead4); font-size: 0.9rem; }
.lb-loading, .lb-empty { color: #64748b; font-size: 0.9rem; text-align: center; padding: 1rem 0; }
.lb-tabs { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.lb-tab { flex: 1; padding: 0.5rem; border: 1px solid rgba(255,255,255,0.08); border-radius: 0.6rem; background: none; color: #64748b; font-family: inherit; font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: all 0.2s; }
.lb-tab.active { background: var(--accent,#5eead4); color: #0d1117; border-color: var(--accent,#5eead4); }

/* ── MOBILE FIXES ────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .mark-grid { grid-template-columns: 1fr 1fr !important; gap: 0.6rem !important; }
  .cmd-card { min-height: 140px; }
  .cmd-inner { min-height: 140px; }
  .cmd-face { min-height: 140px; padding: 0.85rem; }
  .cmd-front h4 { font-size: 0.85rem; }
  .cmd-back p { font-size: 0.75rem; }
  .flashcard-3d { min-height: 150px; }
  .fc-inner { min-height: 150px; }
  .fc-face { min-height: 150px; }
  .fc-face h4 { font-size: 0.78rem !important; }
  .fc-face p { font-size: 0.73rem !important; }
  .lb-name { font-size: 0.85rem; }
  .lb-pts { font-size: 0.8rem; }
  .lb-rank { font-size: 1rem; min-width: 1.5rem; }
  .levels-track { gap: 0.2rem; }
  .level-step { min-width: 50px; padding: 0.3rem; }
  .ls-name { font-size: 0.55rem; }
  .ls-pts { font-size: 0.52rem; }
}

/* ── EDEXCEL CARD PADDING FIX ────────────────────────────────────────────── */
.edexcel-card {
  padding: 2.5rem !important;
  border-radius: 1.2rem !important;
  border: 1px solid rgba(167,139,250,0.25) !important;
  overflow: visible !important;
}
.edexcel-left { padding-right: 1.5rem; }
.alevel-card .alevel-left h2 { margin-bottom: 0.75rem; }
.alevel-card .alevel-desc { margin-bottom: 1.25rem; line-height: 1.7; }
.alevel-chips { gap: 0.5rem; margin-bottom: 1.5rem; }
.alevel-chip { padding: 0.35rem 0.9rem; }
.alevel-badge {
  padding: 1.5rem 2rem !important;
  border-radius: 1rem !important;
  border: 2px solid rgba(167,139,250,0.2) !important;
  align-self: center;
}

@media (max-width: 768px) {
  .edexcel-card { padding: 1.75rem !important; }
  .edexcel-left { padding-right: 0; }
  .alevel-badge { align-self: flex-start; margin-top: 1rem; }
}

/* ── STAR HINT IN QUIZ ───────────────────────────────────────────────────── */
.star-hint {
  font-size: 0.78rem;
  color: #94a3b8;
  background: rgba(251,191,36,0.06);
  border: 1px solid rgba(251,191,36,0.2);
  border-radius: 0.5rem;
  padding: 0.45rem 0.85rem;
  margin-bottom: 1rem;
  display: inline-block;
}

/* ── REATTEMPT BUTTON ────────────────────────────────────────────────────── */
.reattempt-btn {
  margin-top: 0.75rem;
  background: none;
  border: 1px solid rgba(255,255,255,0.15);
  color: #94a3b8;
  padding: 0.55rem 1rem;
  border-radius: 0.6rem;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s;
  display: block;
  width: 100%;
}
.reattempt-btn:hover {
  border-color: var(--accent, #5eead4);
  color: var(--accent, #5eead4);
}

/* ── JOURNEY LEVEL HIGHLIGHTING ──────────────────────────────────────────── */
.level-step.ls-current {
  background: linear-gradient(135deg, rgba(94,234,212,0.18), rgba(94,234,212,0.08)) !important;
  border-color: var(--accent, #5eead4) !important;
  transform: scale(1.12);
  box-shadow: 0 0 16px rgba(94,234,212,0.45), 0 0 6px rgba(94,234,212,0.3);
  z-index: 1;
  position: relative;
}
.level-step.ls-current .ls-name {
  color: var(--accent, #5eead4) !important;
  font-weight: 800;
}
.level-step.ls-current .ls-icon {
  font-size: 1.4rem;
  animation: iconPulse 1.5s ease-in-out infinite alternate;
}
@keyframes iconPulse {
  from { transform: scale(1); }
  to   { transform: scale(1.2); }
}
.level-step.ls-current .ls-pts {
  color: var(--accent, #5eead4) !important;
  font-weight: 700;
}
.level-step.ls-completed {
  background: rgba(94,234,212,0.06) !important;
  border-color: rgba(94,234,212,0.2) !important;
  opacity: 0.7;
}
.level-step.ls-completed .ls-icon::after {
  content: " ✓";
  font-size: 0.6rem;
  color: var(--accent, #5eead4);
}
.levels-track {
  align-items: center;
}

/* ── JOURNEY GLOW STRONGER ───────────────────────────────────────────────── */
.level-step.ls-current {
  background: linear-gradient(135deg, rgba(94,234,212,0.25), rgba(94,234,212,0.12)) !important;
  border: 2px solid var(--accent, #5eead4) !important;
  transform: scale(1.18) !important;
  box-shadow: 0 0 20px rgba(94,234,212,0.6), 0 0 8px rgba(94,234,212,0.4) !important;
  z-index: 2;
  position: relative;
}
.level-step.ls-current .ls-name {
  color: var(--accent, #5eead4) !important;
  font-weight: 800 !important;
  font-size: 0.72rem !important;
}
.level-step.ls-current .ls-pts {
  color: var(--accent, #5eead4) !important;
  font-weight: 700 !important;
}
.level-step.ls-current .ls-icon {
  animation: iconPop 0.8s ease-in-out infinite alternate !important;
}
@keyframes iconPop {
  from { transform: scale(1) rotate(-3deg); }
  to   { transform: scale(1.25) rotate(3deg); }
}