/* ===================================================
   QueryQuest — Main Stylesheet v2
   Dark/Light Mode + Full Mobile Responsive
=================================================== */

/* ===== DARK MODE (default) ===== */
:root {
  --bg-primary:    #050810;
  --bg-secondary:  #090d1a;
  --bg-card:       #0d1326;
  --bg-card-hover: #111b35;
  --border:        #1e3a5f;
  --border-bright: #1e6bb8;
  --accent:        #00d4ff;
  --accent2:       #7c3aed;
  --accent3:       #10b981;
  --text-primary:  #e2eaf7;
  --text-muted:    #6b8aad;
  --text-dim:      #3a5070;
  --danger:        #ef4444;
  --warning:       #f59e0b;
  --success:       #10b981;
  --nav-bg:        rgba(5,8,16,0.88);
  --modal-bg:      rgba(5,8,16,0.92);
  --glow:          0 0 20px rgba(0,212,255,0.3);
  --glow-strong:   0 0 40px rgba(0,212,255,0.5);
  --shadow:        0 4px 24px rgba(0,0,0,0.5);
  --radius: 8px;
  --transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
  --font-mono: 'Share Tech Mono', monospace;
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Exo 2', sans-serif;
}

/* ===== LIGHT MODE ===== */
[data-theme="light"] {
  --bg-primary:    #f0f4fc;
  --bg-secondary:  #e2eaf6;
  --bg-card:       #ffffff;
  --bg-card-hover: #f5f8ff;
  --border:        #c2d0e8;
  --border-bright: #6a9fd8;
  --accent:        #006fa8;
  --accent2:       #5b21b6;
  --accent3:       #047857;
  --text-primary:  #0f1f3d;
  --text-muted:    #4a6080;
  --text-dim:      #8fa4bf;
  --danger:        #dc2626;
  --warning:       #b45309;
  --success:       #047857;
  --nav-bg:        rgba(240,244,252,0.92);
  --modal-bg:      rgba(10,20,50,0.55);
  --glow:          0 0 16px rgba(0,111,168,0.2);
  --glow-strong:   0 0 32px rgba(0,111,168,0.35);
  --shadow:        0 4px 24px rgba(0,0,0,0.1);
}

[data-theme="light"] .bg-grid {
  background-image:
    linear-gradient(rgba(0,100,180,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,100,180,0.05) 1px, transparent 1px);
}
[data-theme="light"] .scanline { opacity: 0.3; }
[data-theme="light"] .accent { text-shadow: none; }
[data-theme="light"] .terminal-preview { box-shadow: 0 20px 60px rgba(0,0,0,0.12); }
[data-theme="light"] .term-line.comment { color: #3d7a6a; }
[data-theme="light"] .term-line.keyword { color: var(--accent); }
[data-theme="light"] .level-card.active { background: rgba(0,111,168,0.06); }
[data-theme="light"] .level-tags span { background: rgba(0,111,168,0.08); border-color: rgba(0,111,168,0.2); }
[data-theme="light"] .result-table tr:hover td { background: rgba(0,111,168,0.04); }

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px; line-height: 1.6;
  min-height: 100vh; overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}

/* ===== BACKGROUNDS ===== */
.bg-grid {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none; z-index: 0;
}
.scanline {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,0,0,0.03) 2px,rgba(0,0,0,0.03) 4px);
  pointer-events: none; z-index: 0;
}

/* ===== TYPOGRAPHY ===== */
h1,h2,h3,h4 { font-family: var(--font-display); letter-spacing: 0.05em; }
.accent { color: var(--accent); text-shadow: 0 0 20px rgba(0,212,255,0.5); }

/* ===== THEME TOGGLE ===== */
.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 50%; cursor: pointer; font-size: 1rem;
  transition: var(--transition); flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--accent); box-shadow: var(--glow); }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 32px;
  background: var(--nav-bg); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100; gap: 12px;
}
.nav-logo {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-size: 1rem; font-weight: 900;
  color: var(--accent); text-decoration: none; letter-spacing: 0.1em; flex-shrink: 0;
}
.logo-icon { font-size: 1.3rem; }
.logo-text { }
.nav-links { display: flex; gap: 24px; }
.nav-links a {
  color: var(--text-muted); text-decoration: none;
  font-family: var(--font-display); font-size: 0.72rem;
  letter-spacing: 0.1em; text-transform: uppercase; transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
.nav-auth { display: flex; gap: 8px; align-items: center; flex-shrink: 0; }
.nav-user { font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent); white-space: nowrap; }

/* Hamburger */
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; background: none; border: none; padding: 4px; flex-shrink: 0;
}
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }

/* Mobile drawer */
.nav-mobile-menu {
  display: none; position: fixed; top: 61px; left: 0; right: 0;
  background: var(--bg-secondary); border-bottom: 1px solid var(--border);
  padding: 16px 20px; flex-direction: column; gap: 4px; z-index: 99;
  max-height: calc(100vh - 61px); overflow-y: auto;
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu a, .nav-mobile-menu button {
  display: block; font-family: var(--font-display); font-size: 0.82rem;
  color: var(--text-muted); text-decoration: none; text-transform: uppercase;
  letter-spacing: 0.08em; padding: 12px 8px;
  border-bottom: 1px solid var(--border);
  background: none; border-top: none; border-left: none; border-right: none;
  cursor: pointer; text-align: left; width: 100%; transition: var(--transition);
}
.nav-mobile-menu a:last-child, .nav-mobile-menu button:last-child { border-bottom: none; }
.nav-mobile-menu a:hover, .nav-mobile-menu button:hover { color: var(--accent); }
.nav-mobile-menu .mobile-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--accent); color: var(--bg-primary);
  font-family: var(--font-display); font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.08em; padding: 10px 20px;
  border-radius: var(--radius); text-decoration: none;
  border: none; cursor: pointer; transition: var(--transition); text-transform: uppercase; white-space: nowrap;
}
.btn-primary:hover { filter: brightness(1.15); box-shadow: var(--glow-strong); transform: translateY(-2px); }
.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: transparent; color: var(--text-primary);
  font-family: var(--font-display); font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.08em; padding: 10px 20px;
  border-radius: var(--radius); text-decoration: none;
  border: 1px solid var(--border); cursor: pointer; transition: var(--transition); text-transform: uppercase; white-space: nowrap;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); box-shadow: var(--glow); }
.btn-lg { padding: 13px 28px; font-size: 0.88rem; }
.btn-sm { padding: 6px 14px; font-size: 0.7rem; }
.btn-danger { background: var(--danger); color: #fff; border: none; }
.btn-success { background: var(--success); color: var(--bg-primary); border: none; }
.btn-run {
  background: var(--accent3); color: var(--bg-primary);
  font-family: var(--font-display); font-size: 0.78rem; font-weight: 700;
  padding: 10px 22px; border-radius: var(--radius); border: none;
  cursor: pointer; letter-spacing: 0.08em; transition: var(--transition); white-space: nowrap;
}
.btn-run:hover { filter: brightness(1.1); box-shadow: 0 0 20px rgba(16,185,129,0.4); }

/* ===== HERO ===== */
.hero {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; align-items: center;
  text-align: center; padding: 140px 20px 80px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3);
  color: var(--accent3); padding: 6px 16px; border-radius: 99px;
  font-family: var(--font-mono); font-size: 0.73rem;
  margin-bottom: 28px; animation: fadeInDown 0.6s ease;
}
.pulse-dot { width: 8px; height: 8px; background: var(--accent3); border-radius: 50%; animation: pulse 1.5s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(0.8)} }
.hero-title { font-size: clamp(2rem,6vw,4.8rem); font-weight: 900; line-height: 1.1; margin-bottom: 20px; animation: fadeInUp 0.7s ease 0.1s both; }
.hero-title .line1 { display: block; }
.hero-title .line2 { display: block; }
.hero-sub { max-width: 520px; color: var(--text-muted); font-size: 1rem; margin-bottom: 36px; animation: fadeInUp 0.7s ease 0.2s both; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-bottom: 48px; animation: fadeInUp 0.7s ease 0.3s both; }

/* Terminal */
.terminal-preview {
  width: 100%; max-width: 620px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  overflow: hidden; box-shadow: 0 40px 80px rgba(0,0,0,0.5), var(--glow);
  animation: fadeInUp 0.8s ease 0.4s both;
}
.term-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: var(--bg-secondary); border-bottom: 1px solid var(--border); }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red{background:#ef4444} .dot.yellow{background:#f59e0b} .dot.green{background:#10b981}
.term-title { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-dim); margin-left: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.term-body { padding: 16px 20px; min-height: 110px; font-family: var(--font-mono); font-size: 0.82rem; line-height: 2; }
.term-line.comment { color: #4a7a6e; }
.term-line.keyword { color: var(--accent); }
.term-line.result  { color: var(--accent3); }

/* ===== STATS BAR ===== */
.stats-bar {
  position: relative; z-index: 1;
  display: flex; justify-content: center; align-items: center;
  padding: 32px 16px; gap: 0;
  background: var(--bg-secondary); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; align-items: center; padding: 8px 36px; }
.stat-num { font-family: var(--font-display); font-size: 2.2rem; font-weight: 900; color: var(--accent); }
.stat-label { font-family: var(--font-mono); font-size: 0.66rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.15em; margin-top: 4px; }
.stat-divider { width: 1px; height: 50px; background: var(--border); }

/* ===== SECTIONS ===== */
.levels-section, .features-section, .adventure-section {
  position: relative; z-index: 1; padding: 80px 32px; max-width: 1300px; margin: 0 auto;
}
.section-title { font-size: clamp(1.3rem,3vw,2rem); text-align: center; margin-bottom: 10px; }
.section-sub { text-align: center; color: var(--text-muted); max-width: 500px; margin: 0 auto 48px; font-size: 0.9rem; }
.section-cta { text-align: center; margin-top: 40px; }

/* ===== LEVEL CARDS ===== */
.levels-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap: 16px; }
.level-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 22px 18px; transition: var(--transition);
  cursor: pointer; position: relative; overflow: hidden;
}
.level-card::before { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:linear-gradient(90deg,transparent,var(--accent),transparent); opacity:0; transition:var(--transition); }
.level-card:hover::before, .level-card.active::before { opacity:1; }
.level-card:hover { border-color: var(--border-bright); background: var(--bg-card-hover); transform: translateY(-4px); box-shadow: var(--glow); }
.level-card.active { border-color: var(--accent); background: rgba(0,212,255,0.04); }
.level-card.locked { opacity: 0.5; cursor: not-allowed; }
.level-rank { font-family: var(--font-display); font-size: 0.6rem; color: var(--text-dim); letter-spacing: 0.2em; margin-bottom: 10px; }
.level-icon { font-size: 1.8rem; margin-bottom: 10px; }
.level-card h3 { font-size: 0.88rem; margin-bottom: 6px; }
.level-card p { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 12px; line-height: 1.5; }
.level-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 12px; }
.level-tags span { font-family: var(--font-mono); font-size: 0.62rem; padding: 2px 7px; border-radius: 4px; background: rgba(0,212,255,0.08); border: 1px solid rgba(0,212,255,0.2); color: var(--accent); }
.level-xp { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent3); }

/* ===== FEATURE CARDS ===== */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 20px; }
.feature-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 28px; transition: var(--transition); }
.feature-card:hover { border-color: var(--accent2); transform: translateY(-3px); }
.feat-icon { font-size: 1.8rem; margin-bottom: 14px; }
.feature-card h3 { font-size: 0.9rem; margin-bottom: 8px; }
.feature-card p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }

/* ===== ADVENTURE CARDS ===== */
.adventure-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 20px; }
.adventure-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px 24px; cursor: pointer;
  transition: var(--transition); position: relative; overflow: hidden;
  text-decoration: none; color: inherit; display: block;
}
.adventure-card:hover { transform: translateY(-5px); }
.adventure-card.detective  { border-color: rgba(245,158,11,0.35); }
.adventure-card.detective:hover  { border-color: #f59e0b; box-shadow: 0 0 24px rgba(245,158,11,0.25); }
.adventure-card.space      { border-color: rgba(124,58,237,0.35); }
.adventure-card.space:hover      { border-color: #7c3aed; box-shadow: 0 0 24px rgba(124,58,237,0.25); }
.adventure-card.dungeon    { border-color: rgba(239,68,68,0.35); }
.adventure-card.dungeon:hover    { border-color: #ef4444; box-shadow: 0 0 24px rgba(239,68,68,0.25); }
.adv-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 12px; }
.adv-icon { font-size: 2.4rem; }
.adv-episodes { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-dim); }
.adv-title { font-family: var(--font-display); font-size: 1rem; margin-bottom: 8px; }
.adv-desc { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.adv-footer { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.adv-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.adv-xp { font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent3); }

/* ===== FOOTER ===== */
.footer { position: relative; z-index: 1; text-align: center; padding: 48px 24px; border-top: 1px solid var(--border); }
.footer-logo { font-family: var(--font-display); font-size: 1rem; color: var(--accent); margin-bottom: 10px; letter-spacing: 0.1em; }
.footer-sub { color: var(--text-dim); font-size: 0.78rem; margin-bottom: 16px; }
.footer-links { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.78rem; transition: var(--transition); }
.footer-links a:hover { color: var(--accent); }

/* ===== ANIMATIONS ===== */
@keyframes fadeInDown { from{opacity:0;transform:translateY(-16px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeInUp   { from{opacity:0;transform:translateY(16px)}  to{opacity:1;transform:translateY(0)} }
@keyframes glow-pulse { 0%,100%{box-shadow:var(--glow)} 50%{box-shadow:var(--glow-strong)} }

/* ===== FORMS ===== */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 7px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-primary);
  font-family: var(--font-mono); font-size: 0.88rem;
  padding: 11px 14px; transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,212,255,0.1); }
.form-group input::placeholder { color: var(--text-dim); }

/* ===== ALERTS ===== */
.alert { padding: 11px 14px; border-radius: var(--radius); font-family: var(--font-mono); font-size: 0.8rem; margin-bottom: 14px; }
.alert-error   { background: rgba(239,68,68,0.1);  border: 1px solid rgba(239,68,68,0.3);  color: #fca5a5; }
.alert-success { background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3); color: #6ee7b7; }
.alert-info    { background: rgba(0,212,255,0.08); border: 1px solid rgba(0,212,255,0.25); color: var(--accent); }

/* ===== RESULT TABLE ===== */
.result-table { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 0.8rem; margin-top: 10px; }
.result-table th { background: var(--bg-secondary); color: var(--accent); padding: 7px 10px; text-align: left; border: 1px solid var(--border); font-weight: 400; }
.result-table td { padding: 7px 10px; border: 1px solid var(--border); color: var(--text-primary); }
.result-table tr:hover td { background: rgba(0,212,255,0.03); }

/* ===== BADGES ===== */
.badge { display: inline-block; font-family: var(--font-mono); font-size: 0.62rem; padding: 3px 9px; border-radius: 99px; letter-spacing: 0.05em; text-transform: uppercase; }
.badge-rookie    { background: rgba(16,185,129,0.15);  color: #6ee7b7; border: 1px solid rgba(16,185,129,0.3); }
.badge-amateur   { background: rgba(59,130,246,0.15);  color: #93c5fd; border: 1px solid rgba(59,130,246,0.3); }
.badge-skilled   { background: rgba(245,158,11,0.15);  color: #fcd34d; border: 1px solid rgba(245,158,11,0.3); }
.badge-advanced  { background: rgba(124,58,237,0.15);  color: #c4b5fd; border: 1px solid rgba(124,58,237,0.3); }
.badge-expert    { background: rgba(239,68,68,0.15);   color: #fca5a5; border: 1px solid rgba(239,68,68,0.3); }
.badge-legendary { background: rgba(0,212,255,0.15);   color: var(--accent); border: 1px solid rgba(0,212,255,0.3); }
.badge-detective { background: rgba(245,158,11,0.15);  color: #fcd34d; border: 1px solid rgba(245,158,11,0.3); }
.badge-space     { background: rgba(124,58,237,0.15);  color: #c4b5fd; border: 1px solid rgba(124,58,237,0.3); }
.badge-dungeon   { background: rgba(239,68,68,0.15);   color: #fca5a5; border: 1px solid rgba(239,68,68,0.3); }

/* ===== MODAL ===== */
.modal-overlay { display: none; position: fixed; inset: 0; background: var(--modal-bg); backdrop-filter: blur(6px); z-index: 200; align-items: center; justify-content: center; padding: 16px; }
.modal-overlay.open { display: flex; }
.modal-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 32px; max-width: 500px; width: 100%; box-shadow: 0 40px 80px rgba(0,0,0,0.7); animation: fadeInUp 0.3s ease; }
.modal-title { font-family: var(--font-display); font-size: 1.1rem; color: var(--accent); margin-bottom: 14px; }

/* ===== XP / PROGRESS ===== */
.xp-bar-wrap { margin-bottom: 36px; }
.xp-bar-label { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-muted); margin-bottom: 7px; flex-wrap: wrap; gap: 4px; }
.xp-bar-bg { height: 8px; background: var(--bg-secondary); border-radius: 99px; overflow: hidden; border: 1px solid var(--border); }
.xp-bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent2), var(--accent)); border-radius: 99px; transition: width 1s ease; }

/* ===== STAT CARDS (dashboard) ===== */
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit,minmax(130px,1fr)); gap: 14px; margin-bottom: 36px; }
.stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 18px 14px; text-align: center; }
.stat-card-num { font-family: var(--font-display); font-size: 1.8rem; color: var(--accent); }
.stat-card-label { font-family: var(--font-mono); font-size: 0.63rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-top: 4px; }

/* ===== LEADERBOARD ===== */
.lb-row { display: grid; grid-template-columns: 48px 1fr 90px 100px; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--border); transition: var(--transition); }
.lb-row:last-child { border-bottom: none; }
.lb-row:hover { background: var(--bg-card-hover); }
.lb-row.is-me { background: rgba(0,212,255,0.05); border-left: 3px solid var(--accent); }
.lb-row.header { background: var(--bg-secondary); }
.lb-rank { font-family: var(--font-display); font-size: 0.88rem; color: var(--text-muted); }
.lb-rank.gold{color:var(--warning)} .lb-rank.silver{color:#9ca3af} .lb-rank.bronze{color:#cd7f32}
.lb-user { display: flex; align-items: center; gap: 10px; min-width: 0; }
.lb-avatar { width: 30px; height: 30px; border-radius: 50%; background: var(--bg-secondary); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-size: 0.7rem; color: var(--accent); flex-shrink: 0; }
.lb-username { font-family: var(--font-mono); font-size: 0.8rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-xp { font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent3); }
.lb-level { text-align: right; }

/* ===== STORY / ADVENTURE LAYOUT ===== */
.story-chapter-label { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.15em; margin-bottom: 4px; }
.story-narrative { font-size: 0.88rem; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; padding-left: 14px; border-left: 3px solid var(--accent2); font-style: italic; }
.story-objective { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 8px; padding: 14px; margin-bottom: 14px; }
.story-objective-label { font-family: var(--font-mono); font-size: 0.66rem; color: var(--accent); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 6px; }

/* ===== RESPONSIVE: TABLET ===== */
@media (max-width: 900px) {
  .navbar { padding: 12px 20px; }
  .challenge-layout { grid-template-columns: 1fr !important; }
  .lb-row { grid-template-columns: 44px 1fr 80px; }
  .lb-level { display: none; }
  .levels-section, .features-section, .adventure-section { padding: 60px 20px; }
}

/* ===== RESPONSIVE: MOBILE ===== */
@media (max-width: 640px) {
  body { font-size: 15px; }
  .navbar { padding: 10px 14px; }
  .nav-links  { display: none; }
  .nav-auth   { display: none; }
  .nav-hamburger { display: flex; }

  .hero { padding: 90px 14px 48px; }
  .hero-badge { font-size: 0.68rem; }
  .hero-title { font-size: clamp(1.8rem,8vw,2.8rem); }
  .hero-sub { font-size: 0.88rem; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta a, .hero-cta button { width: 100%; text-align: center; justify-content: center; }
  .btn-lg { padding: 12px 20px; font-size: 0.82rem; }

  .terminal-preview { border-radius: 8px; }
  .term-title { display: none; }
  .term-body { padding: 12px 14px; font-size: 0.75rem; }

  .stats-bar { padding: 20px 10px; gap: 0; }
  .stat { padding: 6px 18px; }
  .stat-num { font-size: 1.7rem; }
  .stat-divider { display: none; }

  .levels-section, .features-section, .adventure-section { padding: 40px 14px; }
  .levels-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .level-card { padding: 16px 12px; }
  .level-icon { font-size: 1.5rem; }
  .features-grid { grid-template-columns: 1fr; gap: 12px; }
  .adventure-grid { grid-template-columns: 1fr; }

  .stat-cards { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card-num { font-size: 1.5rem; }

  .lb-row { grid-template-columns: 36px 1fr 64px; padding: 10px 10px; }
  .lb-level { display: none; }
  .lb-avatar { width: 26px; height: 26px; font-size: 0.65rem; }
  .lb-username { font-size: 0.75rem; }
  .top3 { grid-template-columns: 1fr 1.1fr 1fr; gap: 8px; }
  .podium-card { padding: 14px 8px; }
  .podium-avatar { width: 38px; height: 38px; font-size: 0.9rem; }
  .podium-name { font-size: 0.7rem; }
  .podium-xp { font-size: 0.65rem; }

  .modal-box { padding: 22px 16px; }
  .auth-card { padding: 28px 16px !important; }

  .section-title { font-size: 1.25rem; }
  .section-sub { font-size: 0.84rem; }
}

@media (max-width: 380px) {
  .levels-grid { grid-template-columns: 1fr; }
  .top3 { grid-template-columns: 1fr; }
  .stat-cards { grid-template-columns: 1fr 1fr; }
}

/* ===== CODEMIRROR FIXES =====
   FIX 4: fixed height, no expansion, light mode support
*/
.CodeMirror {
  height: 200px !important;
  max-height: 200px !important;
  font-size: 0.84rem !important;
  font-family: var(--font-mono) !important;
  background: var(--bg-card) !important;
  color: var(--text-primary) !important;
  border: none !important;
  /* Prevent the editor from pushing layout */
  overflow: hidden !important;
}
.CodeMirror-scroll {
  max-height: 200px !important;
  overflow-y: auto !important;
  overflow-x: auto !important;
  background: var(--bg-card) !important;
}
.CodeMirror-gutters {
  background: var(--bg-secondary) !important;
  border-right: 1px solid var(--border) !important;
}
.CodeMirror-linenumber {
  color: var(--text-dim) !important;
}
.CodeMirror-cursor {
  border-left-color: var(--accent) !important;
}
/* Selected text */
.CodeMirror-selected { background: rgba(0,212,255,0.15) !important; }

/* FIX 4: Light mode — override dracula theme colours */
[data-theme="light"] .CodeMirror {
  background: #f8faff !important;
  color: #1a2540 !important;
}
[data-theme="light"] .CodeMirror-scroll {
  background: #f8faff !important;
}
[data-theme="light"] .CodeMirror-gutters {
  background: #edf1fa !important;
  border-right-color: var(--border) !important;
}
[data-theme="light"] .CodeMirror-linenumber { color: #8fa4bf !important; }
[data-theme="light"] .CodeMirror-cursor { border-left-color: var(--accent) !important; }
/* Syntax tokens in light mode */
[data-theme="light"] .cm-keyword  { color: #0066aa !important; font-weight: 600; }
[data-theme="light"] .cm-string   { color: #047857 !important; }
[data-theme="light"] .cm-number   { color: #b45309 !important; }
[data-theme="light"] .cm-comment  { color: #6b7c95 !important; font-style: italic; }
[data-theme="light"] .cm-variable { color: #1a2540 !important; }
[data-theme="light"] .cm-operator { color: #5b21b6 !important; }
[data-theme="light"] .cm-def      { color: #0077bb !important; }
[data-theme="light"] .CodeMirror-selected { background: rgba(0,111,168,0.15) !important; }

/* Mobile: slightly shorter editor */
@media (max-width: 640px) {
  .CodeMirror,
  .CodeMirror-scroll { height: 160px !important; max-height: 160px !important; }
}