/* ═══════════════════════════════════════════════════════════════════════════
   КодиК — Main Stylesheet  (dark by default, light-mode via .light-theme)
   ═══════════════════════════════════════════════════════════════════════════ */

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

:root {
  --bg-base:       #0B1120;
  --bg-card:       #111D33;
  --bg-elevated:   #192236;
  --border:        #1E3560;
  --text-primary:  #F0F2F8;
  --text-secondary:#A0BAD4;
  --text-muted:    #94B8D0;

  /* KiberOne primary = orange; keeping var names for compatibility */
  --accent-green:  #FF6600;
  --accent-blue:   #33BBFF;
  --accent-purple: #BC8CFF;
  --accent-orange: #FFD700;
  --accent-red:    #FF4757;
  --accent-yellow: #FFC107;

  --student-color: #FF6600;
  --teacher-color: #33BBFF;
  --admin-color:   #BC8CFF;
  --parent-color:  #FF69B4;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow: 0 4px 24px rgba(0,0,0,.5);
  --shadow-glow-green: 0 0 24px rgba(255,102,0,.4);
  --shadow-glow-blue:  0 0 20px rgba(51,187,255,.3);

  --font: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

html { font-size: 17px; }
body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font);
  line-height: 1.7;
  letter-spacing: -0.01em;
  min-height: 100vh;
}

/* ── Light theme ───────────────────────────────────────────────────────── */
body.light-theme {
  --bg-base:       #DFF0FA;
  --bg-card:       #EAF5FF;
  --bg-elevated:   #D0E8F5;
  --border:        #A8C8E0;
  --text-primary:  #0E1E34;
  --text-secondary:#1E3E5A;
  --text-muted:    #3A5E7A;
  --shadow:        0 4px 24px rgba(10,40,90,.13);
}

/* Accent colour overrides — yellow/gold are illegible on light blue backgrounds */
body.light-theme {
  --accent-orange: #8A6000;   /* dark gold (was #FFD700 — 1.4:1 contrast → now ~5.5:1) */
  --accent-yellow: #965000;   /* dark amber (was #FFC107 — 1.7:1 contrast → now ~5:1)  */
}

/* Hardcoded #FFD700 colour instances */
body.light-theme .hero-rank-badge {
  background: rgba(138,96,0,.1); border-color: rgba(138,96,0,.35); color: #8A6000;
}
body.light-theme .bonus-module-title { color: #8A6000; }
body.light-theme .lb-xp { color: #965000; font-weight: 600; }
body.light-theme .xp-display { color: #965000; }
body.light-theme .case-price  { color: #965000; }
body.light-theme .avatar-price { color: #965000; }
body.light-theme .assign-due  { color: #8A6000; }
body.light-theme .assignment-due { color: #8A6000; }
body.light-theme .level-node-xp { color: #965000; }
body.light-theme .xp-badge {
  background: rgba(150,80,0,.1); border-color: rgba(150,80,0,.4); color: #965000;
}
body.light-theme .theory-content pre code { color: #965000; }
body.light-theme .success-xp { color: #965000; }
body.light-theme .flash-warning {
  background: rgba(138,96,0,.08); border-color: #8A6000; color: #8A6000;
}
body.light-theme .badge-warning { background: rgba(138,96,0,.12); color: #8A6000; }
body.light-theme .note-remark { border-left-color: #8A6000; }

/* Bonus module cards */
body.light-theme .bonus-module-card {
  background: linear-gradient(135deg, rgba(138,96,0,.07), rgba(255,102,0,.04));
  border-color: rgba(138,96,0,.35);
}
body.light-theme .bonus-module-title { color: #8A6000; }
body.light-theme .bonus-module-badge { background: rgba(138,96,0,.1); color: #8A6000; }

/* Bonus nodes on level map */
body.light-theme .zz-bonus-label { color: #8A6000; }
body.light-theme .zz-bonus-connector { stroke: rgba(138,96,0,.35); }
body.light-theme .zz-bonus-ring { border-color: rgba(138,96,0,.3); }
body.light-theme .zz-bonus-inner {
  background: linear-gradient(135deg, #FFF8E8, #FFF4D0);
  border-color: rgba(138,96,0,.6);
  box-shadow: 0 0 12px rgba(138,96,0,.15);
}

/* Navbar — light mode: soft blue header */
body.light-theme .navbar {
  background: rgba(195,228,248,.97);
  border-bottom-color: #90C0DC;
}
body.light-theme .nav-link { color: #1E3E5A; }
body.light-theme .nav-link:hover { background: rgba(160,210,240,.35); color: #0E1E34; }
body.light-theme .nav-link.active { background: rgba(160,210,240,.4); color: #FF6600; }
body.light-theme .brand-name { color: #FF6600; }
body.light-theme .user-name { color: #1E3E5A; }
body.light-theme .user-avatar { color: var(--text-primary); }
body.light-theme .theme-toggle { background: rgba(160,210,240,.4); border-color: #90C0DC; color: #1E3E5A; }
body.light-theme .xp-pill { background: rgba(255,102,0,.12); border-color: rgba(255,102,0,.35); }
body.light-theme .streak-badge { background: rgba(255,102,0,.12); border-color: rgba(255,102,0,.3); }
body.light-theme .nav-badge { background: #FF6600; color: #fff; }

/* Dropdown */
body.light-theme .dropdown-menu { background: #EAF5FF; border-color: #90C0DC; }
body.light-theme .dropdown-item { color: #1E3E5A; }
body.light-theme .dropdown-item:hover { background: rgba(160,210,240,.35); }

/* Map text — dark in light mode (map background is now light blue) */
body.light-theme .zz-label { color: #0A2040; }
body.light-theme .zz-progress { color: #1E4A6E; }

/* Blocks with hardcoded dark backgrounds — override for light theme */
body.light-theme .student-hero {
  background: linear-gradient(135deg, #D8EEFA 0%, #CBE6F5 100%);
  border-color: rgba(255,102,0,.25);
}
body.light-theme .student-hero .xp-bar { background: #B8D8EE; }
body.light-theme .battle-pass {
  background: linear-gradient(135deg, #D8EEFA 0%, #CBE6F5 100%);
  border-color: rgba(255,102,0,.3);
}
body.light-theme .bp-bar-bg { background: #B8D8EE; }
body.light-theme .bp-tier { background: #EAF5FF; border-color: #A8C8E0; }
body.light-theme .bp-tier.reached { background: rgba(255,102,0,.1); border-color: rgba(255,102,0,.35); }

/* Code editor / sandbox */
body.light-theme .code-editor { background: #D5EBF8; border-color: #A8C8E0; color: #0E1E34; }
body.light-theme .output-area  { background: #CBE3F5; border-color: #A8C8E0; color: #1E3E5A; }

a { color: var(--accent-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Scrollbar ─────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Navbar ────────────────────────────────────────────────────────────── */
.navbar {
  display: flex; align-items: center; gap: 16px;
  padding: 0 24px; height: 60px;
  background: rgba(11,17,32,.97);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(12px);
  transition: background .25s, border-color .25s;
}
.nav-brand { display: flex; align-items: center; gap: 8px; }
.brand-icon { font-size: 26px; filter: sepia(1) saturate(5) hue-rotate(10deg); }
.brand-name { font-size: 20px; font-weight: 800; color: var(--accent-green); letter-spacing: .5px; }
.theme-toggle {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 20px; padding: 4px 12px; cursor: pointer; font-size: 16px;
  color: var(--text-secondary); transition: all .2s;
  display: inline-flex; align-items: center; justify-content: center; line-height: 1;
}
.theme-toggle:hover { border-color: var(--accent-green); color: var(--text-primary); }
.streak-badge {
  display: flex; align-items: center; gap: 4px;
  background: rgba(255,102,0,.12); border: 1px solid rgba(255,102,0,.3);
  padding: 4px 10px; border-radius: 16px; font-size: 13px; font-weight: 700;
  color: var(--accent-green);
}
.nav-links { display: flex; gap: 4px; flex: 1; }
.nav-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 14px; border-radius: var(--radius-sm);
  color: var(--text-secondary); font-size: 14px;
  transition: all .2s;
}
.nav-link:hover { background: var(--bg-elevated); color: var(--text-primary); text-decoration: none; }
.nav-link.active { background: var(--bg-elevated); color: var(--accent-green); }

.nav-badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 18px; height: 18px; padding: 0 5px;
  background: var(--accent-red); color: #fff;
  border-radius: 9px; font-size: 11px; font-weight: 700; line-height: 1;
}
.nav-badge-mobile { margin-left: auto; }

.nav-user { display: flex; align-items: center; gap: 12px; margin-left: auto; flex-shrink: 0; }
.xp-pill {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,102,0,.12); border: 1px solid rgba(255,102,0,.3);
  padding: 4px 12px; border-radius: 20px;
  font-size: 13px; color: var(--accent-green);
  white-space: nowrap; flex-shrink: 0;
}
.lv-badge {
  background: var(--accent-green); color: #fff;
  padding: 1px 8px; border-radius: 10px; font-weight: 700; font-size: 12px;
  white-space: nowrap; flex-shrink: 0;
}

.user-menu { position: relative; cursor: pointer; display: flex; align-items: center; gap: 8px; }
.user-avatar { font-size: 24px; }
.user-name { font-size: 14px; color: var(--text-secondary); }
.dropdown-menu {
  display: none; position: absolute; top: 100%; right: 0;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); min-width: 140px; z-index: 200;
  box-shadow: var(--shadow);
}
.user-menu:hover .dropdown-menu { display: block; }
.dropdown-item { display: block; padding: 10px 16px; color: var(--text-primary); font-size: 14px; }
.dropdown-item:hover { background: var(--bg-elevated); text-decoration: none; }

/* ── Main Content ──────────────────────────────────────────────────────── */
.main-content { padding: 24px; max-width: 1400px; margin: 0 auto; }

/* ── Flash Messages ────────────────────────────────────────────────────── */
.flash-container { margin-bottom: 16px; }
.flash {
  padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 8px;
  font-size: 14px;
}
.flash-success { background: rgba(255,102,0,.12); border: 1px solid var(--accent-green); color: var(--accent-green); }
.flash-danger  { background: rgba(255,123,114,.1); border: 1px solid var(--accent-red); color: var(--accent-red); }
.flash-info    { background: rgba(88,166,255,.1); border: 1px solid var(--accent-blue); color: var(--accent-blue); }
.flash-warning { background: rgba(255,166,87,.1); border: 1px solid var(--accent-orange); color: var(--accent-orange); }

/* ── Auth Pages ────────────────────────────────────────────────────────── */
.auth-page {
  min-height: 100vh;
  background: radial-gradient(ellipse at 30% 50%, #1a1000 0%, #0B1120 60%);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  transition: background .3s;
}
body.light-theme.auth-page {
  background: radial-gradient(ellipse at 30% 50%, #b8daf5 0%, #DFF0FA 60%);
}
.auth-container { width: 100%; display: flex; justify-content: center; }
.auth-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 40px; width: 100%; max-width: 420px;
  box-shadow: var(--shadow), var(--shadow-glow-green);
}
.auth-card-wide { max-width: 640px; }
.auth-header { text-align: center; margin-bottom: 32px; }
.auth-logo { font-size: 56px; margin-bottom: 8px; }
.auth-title { font-size: 28px; font-weight: 700; color: var(--accent-green); }
.auth-subtitle { color: var(--text-secondary); font-size: 14px; margin-top: 4px; }

.auth-form { display: flex; flex-direction: column; gap: 16px; }
.form-label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }
.form-input {
  width: 100%; padding: 10px 14px;
  background: var(--bg-base); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-primary); font-size: 14px;
  transition: border-color .2s;
}
.form-input:focus { outline: none; border-color: var(--accent-green); }
.form-input-sm { padding: 6px 10px; font-size: 13px; }
textarea.form-input { resize: vertical; }
select.form-input { cursor: pointer; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 20px; border-radius: var(--radius-sm); font-size: 14px;
  font-weight: 600; cursor: pointer; border: none; transition: all .2s;
  text-decoration: none;
}
.btn-full { width: 100%; }
.btn-primary { background: var(--accent-green); color: #fff; }
.btn-primary:hover { background: #FF8C00; transform: translateY(-1px); box-shadow: var(--shadow-glow-green); }
.btn-secondary { background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { background: #1E2E45; }
.btn-success { background: #1E5C1E; color: #fff; }
.btn-success:hover { background: #287828; }
.btn-danger  { background: var(--accent-red); color: #fff; }
.btn-danger:hover { background: #ff5e54; }
.btn-outline { background: transparent; color: var(--accent-green); border: 1px solid var(--accent-green); }
.btn-outline:hover { background: rgba(255,102,0,.12); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-xs { padding: 4px 8px; font-size: 12px; }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-hint { background: rgba(88,166,255,.2); color: var(--accent-blue); border: 1px solid var(--accent-blue); font-size: 12px; padding: 4px 10px; margin-left: 8px; }

.auth-switch { text-align: center; margin-top: 20px; font-size: 14px; color: var(--text-secondary); }
.auth-switch a { color: var(--accent-green); }

/* Demo buttons */
.auth-demo { margin-top: 24px; padding: 16px; background: var(--bg-base); border-radius: var(--radius-sm); }
.demo-title { font-size: 12px; color: var(--text-muted); margin-bottom: 10px; }
.demo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.demo-btn {
  padding: 8px; background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 12px;
  cursor: pointer; transition: all .2s;
}
.demo-btn:hover { background: var(--bg-card); color: var(--text-primary); border-color: var(--accent-green); }

/* ── Role selector ─────────────────────────────────────────────────────── */
.role-selector { margin-bottom: 8px; }
.role-selector-title { font-size: 13px; color: var(--text-secondary); margin-bottom: 12px; font-weight: 600; }
.role-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.role-card { cursor: pointer; }
.role-card input { display: none; }
.role-card-inner {
  padding: 14px; border-radius: var(--radius-md);
  border: 2px solid var(--border); text-align: center;
  transition: all .2s;
}
.role-card.selected .role-card-inner {
  border-color: var(--accent-green);
  background: rgba(255,102,0,.08);
}
.role-icon { font-size: 28px; margin-bottom: 6px; }
.role-name { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.role-desc { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ── Stats Grid ────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 20px 14px; text-align: center;
  transition: all .2s;
}
.stat-card:hover { border-color: var(--accent-green); transform: translateY(-2px); }
.stat-icon {
  width: 60px; height: 60px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin: 0 auto 12px;
}
.stat-icon-green  { background: rgba(39,174,96,.2); border: 2px solid rgba(39,174,96,.4); }
.stat-icon-blue   { background: rgba(41,128,185,.2); border: 2px solid rgba(41,128,185,.4); }
.stat-icon-orange { background: rgba(255,102,0,.2);  border: 2px solid rgba(255,102,0,.4); }
.stat-icon-yellow { background: rgba(241,196,15,.2); border: 2px solid rgba(241,196,15,.4); }
.stat-icon-pink   { background: rgba(253,121,168,.2); border: 2px solid rgba(253,121,168,.4); }
.stat-icon-purple { background: rgba(108,92,231,.2); border: 2px solid rgba(108,92,231,.4); }
.stat-value { font-size: 34px; font-weight: 800; color: var(--accent-green); }
.stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 6px; font-weight: 500; }

/* ── Dashboard Grid ────────────────────────────────────────────────────── */
.dashboard-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px;
}
.dash-section {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 20px;
}
.section-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; color: var(--text-primary); }
.section-sub { font-size: 13px; color: var(--text-secondary); margin-bottom: 16px; }

/* ── Student Hero ──────────────────────────────────────────────────────── */
.student-hero {
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  background: linear-gradient(135deg, #1a0d00 0%, #111D33 100%);
  border: 1px solid rgba(255,102,0,.2); border-radius: var(--radius-lg);
  padding: 24px; margin-bottom: 24px;
}
.hero-avatar { font-size: 56px; flex-shrink: 0; }
.hero-info { flex: 1; min-width: 0; min-width: 160px; }
.hero-name { font-size: 22px; font-weight: 700; margin-bottom: 4px; overflow-wrap: break-word; }
.hero-level { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; white-space: nowrap; }
.xp-bar {
  height: 8px; background: var(--bg-base); border-radius: 4px; overflow: hidden;
}
.xp-fill { height: 100%; background: linear-gradient(90deg, var(--accent-green), #FF8C00); border-radius: 4px; transition: width .5s; }

.hero-rank { font-size: 13px; color: var(--text-secondary); margin-top: 8px; }
.hero-rank-badge {
  display: inline-block; font-size: 13px; font-weight: 700;
  background: rgba(255,215,0,.12); border: 1px solid rgba(255,215,0,.35);
  color: #FFD700; padding: 2px 10px; border-radius: 10px;
  text-decoration: none; transition: background .15s;
}
.hero-rank-badge:hover { background: rgba(255,215,0,.22); }

.hero-difficulty { text-align: right; flex-shrink: 0; }
.diff-label { font-size: 12px; color: var(--text-muted); display: block; margin-bottom: 8px; }
.diff-toggle { display: flex; gap: 4px; }
.diff-btn {
  padding: 8px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: var(--bg-base); color: var(--text-secondary); cursor: pointer; font-size: 13px;
  transition: all .2s;
}
.diff-btn.active {
  background: rgba(255,102,0,.2); border-color: var(--accent-green); color: var(--accent-green);
}

/* ── Quick Actions ─────────────────────────────────────────────────────── */
.quick-actions { display: flex; flex-direction: column; gap: 10px; }
.quick-card {
  display: flex; align-items: center; gap: 14px;
  padding: 14px; background: var(--bg-base); border: 1px solid var(--border);
  border-radius: var(--radius-sm); transition: all .2s; color: var(--text-primary);
}
.quick-card:hover { border-color: var(--accent-green); background: rgba(255,102,0,.06); text-decoration: none; }
.quick-icon { font-size: 28px; }
.quick-title { font-size: 14px; font-weight: 600; }
.quick-sub { font-size: 12px; color: var(--text-secondary); }

/* ── Achievements ──────────────────────────────────────────────────────── */
.achievements-list { display: flex; flex-direction: column; gap: 10px; }
.achievement-item { display: flex; align-items: center; gap: 12px; padding: 10px; background: var(--bg-base); border-radius: var(--radius-sm); }
.ach-icon { font-size: 28px; }
.ach-name { font-size: 14px; font-weight: 600; }
.ach-desc { font-size: 12px; color: var(--text-secondary); }
.link-more { display: inline-block; margin-top: 12px; font-size: 13px; color: var(--accent-blue); }
.empty-state { text-align: center; padding: 20px; color: var(--text-muted); font-size: 14px; }
.empty-icon { font-size: 32px; margin-bottom: 8px; }

/* ── Assignment items ──────────────────────────────────────────────────── */
.assignment-list { display: flex; flex-direction: column; gap: 8px; }
.assignment-item { display: flex; align-items: center; gap: 12px; padding: 10px; background: var(--bg-base); border-radius: var(--radius-sm); }
.assign-icon { font-size: 20px; }
.assign-title { font-size: 14px; font-weight: 500; }
.assign-due { font-size: 12px; color: var(--accent-orange); }

/* ── Motivation Banner ─────────────────────────────────────────────────── */
.motivation-banner {
  margin-top: 24px; padding: 16px 24px;
  background: linear-gradient(135deg, rgba(108,92,231,.2), rgba(255,102,0,.12));
  border: 1px solid rgba(108,92,231,.4); border-radius: var(--radius-md);
  text-align: center;
}
.motivation-text { font-size: 16px; color: var(--accent-purple); }

/* ── Level Map ─────────────────────────────────────────────────────────── */
.page-levelmap { max-width: 1100px; margin: 0 auto; }
.page-header { margin-bottom: 24px; }
.page-header h1 { font-size: 28px; font-weight: 800; }
.page-subtitle { font-size: 15px; color: var(--text-secondary); margin-top: 4px; }

/* ── Zigzag / Duolingo-style map ───────────────────────────────────────── */
.map-wrapper { margin-bottom: 32px; }
.zz-container {
  max-width: 480px; margin: 0 auto; position: relative;
  padding: 20px 0 40px;
}
.zz-svg {
  position: absolute; left: 0; top: 0; width: 100%; pointer-events: none;
  overflow: visible;
}
.zz-path { fill: none; stroke: var(--border); stroke-width: 6; stroke-linecap: round; }
.zz-path-done { fill: none; stroke: var(--accent-green); stroke-width: 6; stroke-linecap: round; opacity: .8; }
.zz-nodes { position: relative; }
.zz-row {
  height: 160px; position: relative; display: flex; align-items: center;
}
.zz-node {
  position: absolute; display: flex; flex-direction: column; align-items: center;
  cursor: pointer; transition: transform .2s; transform: translateX(-50%);
  z-index: 2;
}
.zz-node:hover:not(.locked) { transform: translateX(-50%) scale(1.08); }
.zz-node.locked { cursor: not-allowed; }
.zz-ring {
  width: 90px; height: 90px; border-radius: 50%;
  border: 4px solid rgba(255,255,255,.15); position: absolute;
  animation: pulse-ring 2.5s infinite;
}
.zz-node.done .zz-ring { border-color: rgba(255,102,0,.5); }
.zz-node.locked .zz-ring { display: none; }
@keyframes pulse-ring {
  0%,100% { transform: scale(.9); opacity: .7; }
  50%      { transform: scale(1.08); opacity: .3; }
}
.zz-inner {
  width: 80px; height: 80px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 20px rgba(0,0,0,.5); border: 3px solid rgba(255,255,255,.15);
  font-size: 32px; position: relative; z-index: 1;
}
.zz-node.done .zz-inner { border-color: rgba(255,102,0,.6); box-shadow: 0 0 20px rgba(255,102,0,.4); }
.zz-node.locked .zz-inner { filter: grayscale(1); opacity: .45; }
.zz-label {
  margin-top: 10px; text-align: center; width: 110px;
  font-size: 12px; font-weight: 700; color: var(--text-primary);
  text-shadow: 0 2px 8px rgba(0,0,0,.9); line-height: 1.3;
}
.zz-progress { font-size: 11px; color: var(--text-secondary); margin-top: 2px; font-weight: 500; }
.zz-done-badge {
  position: absolute; top: -6px; right: -6px;
  background: var(--accent-green); color: #fff;
  border-radius: 50%; width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; z-index: 3; box-shadow: 0 2px 8px rgba(0,0,0,.4);
}

/* old canvas map (keep for reference, not used) */
.map-paths { overflow: visible; }
.map-node.locked { cursor: not-allowed; }

.modules-list { margin-top: 8px; }
.modules-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.module-card {
  display: flex; align-items: center; gap: 16px;
  padding: 16px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); cursor: pointer; transition: all .2s; position: relative;
}
.module-card:hover:not(.locked) { border-color: var(--accent-green); transform: translateY(-2px); }
.module-card.locked { opacity: .5; cursor: not-allowed; }
.module-card.done { border-color: rgba(255,102,0,.25); }
.module-icon { width: 48px; height: 48px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 24px; flex-shrink: 0; }
.module-info { flex: 1; min-width: 0; }
.module-title { font-weight: 600; font-size: 15px; }
.module-desc { font-size: 13px; color: var(--text-secondary); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.module-progress-bar { height: 4px; background: var(--bg-base); border-radius: 2px; margin-top: 8px; overflow: hidden; }
.module-progress-fill { height: 100%; border-radius: 2px; transition: width .5s; }
.module-stats { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.module-lock, .module-done { font-size: 20px; flex-shrink: 0; }

/* ── Module levels path ────────────────────────────────────────────────── */
.page-module { max-width: 800px; margin: 0 auto; }
.module-header {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 20px; margin-bottom: 32px;
  background: var(--bg-card); border: 2px solid; border-radius: var(--radius-lg);
}
.module-header-icon { width: 56px; height: 56px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 28px; flex-shrink: 0; }
.module-header-text { flex: 1; min-width: 0; }
.module-header-text h1 { font-size: 22px; font-weight: 700; word-break: break-word; overflow-wrap: break-word; }
.module-header-text p { font-size: 14px; color: var(--text-secondary); margin-top: 4px; word-break: break-word; overflow-wrap: break-word; }

.levels-path { display: flex; flex-direction: column; align-items: center; gap: 0; }
.level-node-wrap { display: flex; flex-direction: column; align-items: center; width: 100%; }
.level-connector { width: 4px; height: 32px; background: var(--border); transition: background .3s; }
.level-connector.done { background: var(--accent-green); }

.level-node {
  display: flex; align-items: center; gap: 16px;
  width: 100%; max-width: 500px; padding: 16px 20px;
  background: var(--bg-card); border: 2px solid var(--border);
  border-radius: var(--radius-md); cursor: pointer; transition: all .2s;
  box-sizing: border-box;
}
.level-node:hover.unlocked { border-color: var(--accent-green); transform: translateX(4px); }
.level-node.completed { border-color: rgba(255,102,0,.5); background: rgba(255,102,0,.08); }
.level-node.locked { cursor: not-allowed; opacity: .5; }
.level-node-inner { width: 44px; height: 44px; border-radius: 50%; background: var(--bg-base); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.level-node-icon { font-size: 20px; }
.level-node-info { flex: 1; min-width: 0; }
.level-node-num { font-size: 11px; color: var(--text-muted); }
.level-node-title { font-weight: 600; font-size: 15px; overflow-wrap: break-word; word-break: break-word; }
.level-node-xp { font-size: 12px; color: var(--accent-yellow); margin-top: 2px; }

/* ── Level page ────────────────────────────────────────────────────────── */
.page-level { max-width: 1100px; margin: 0 auto; }
.level-header {
  display: flex; align-items: center; gap: 16px; margin-bottom: 24px;
  flex-wrap: wrap;
}
.level-title-block { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; flex-wrap: wrap; }
.level-title-block h1 { font-size: 22px; font-weight: 700; word-break: break-word; overflow-wrap: break-word; min-width: 0; }
.xp-badge {
  background: rgba(241,224,90,.15); border: 1px solid var(--accent-yellow);
  color: var(--accent-yellow); padding: 3px 12px; border-radius: 20px; font-size: 13px;
}
.back-btn {
  padding: 6px 14px; background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 14px;
  cursor: pointer; transition: all .2s; white-space: nowrap;
}
.back-btn:hover { color: var(--text-primary); text-decoration: none; }

.difficulty-switch-level { display: flex; gap: 6px; }
.diff-btn-sm {
  padding: 6px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: var(--bg-base); color: var(--text-secondary); cursor: pointer; font-size: 13px;
  transition: all .2s;
}
.diff-btn-sm.active { background: rgba(255,102,0,.15); border-color: var(--accent-green); color: var(--accent-green); }

/* Theory */
.theory-container { max-width: 720px; margin: 0 auto; }
.theory-content {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 32px; margin-bottom: 24px;
  font-size: 15px; line-height: 1.8; overflow: hidden;
}
.theory-content h2 { font-size: 20px; color: var(--accent-green); margin-bottom: 16px; word-break: break-word; }
.theory-content h3 { font-size: 17px; color: var(--accent-blue); margin: 16px 0 10px; word-break: break-word; }
.theory-content p { color: var(--text-secondary); margin-bottom: 12px; overflow-wrap: break-word; word-break: break-word; }
.theory-content ul, .theory-content ol { color: var(--text-secondary); padding-left: 22px; line-height: 1.8; overflow-wrap: break-word; word-break: break-word; }
.theory-content pre { background: #0B1120; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px; overflow-x: auto; margin: 12px 0; max-width: 100%; box-sizing: border-box; -webkit-overflow-scrolling: touch; }
.theory-content code { font-family: 'JetBrains Mono', 'Consolas', monospace; font-size: 14px; color: var(--accent-green); }
.theory-content pre code { color: var(--accent-yellow); word-break: normal; }
.theory-content .tip { background: rgba(88,166,255,.1); border-left: 3px solid var(--accent-blue); padding: 12px 16px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--accent-blue); font-size: 14px; overflow-wrap: break-word; }

/* Task */
.task-container { display: grid; grid-template-columns: 1fr; gap: 20px; }
.task-description {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 20px;
}
.task-description h3 { font-size: 16px; color: var(--text-primary); margin-bottom: 10px; }
.task-description p { color: var(--text-secondary); font-size: 15px; }
.expected-output {
  margin-top: 12px; padding: 10px 14px;
  background: rgba(255,102,0,.08); border: 1px solid rgba(255,102,0,.2); border-radius: var(--radius-sm);
  font-size: 13px;
}
.expected-output code { color: var(--accent-green); font-family: monospace; margin-left: 8px; }

/* ── Block Editor ──────────────────────────────────────────────────────── */
.block-editor {
  display: grid; grid-template-columns: 200px 1fr; gap: 16px;
  min-height: 400px;
}
.block-palette {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 16px;
}
.block-palette h4 { font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }
.palette-blocks { display: flex; flex-direction: column; gap: 6px; }

.palette-block {
  padding: 8px 10px; border-radius: 6px; cursor: grab; user-select: none;
  font-size: 13px; font-family: monospace; font-weight: 600;
  transition: transform .15s, opacity .15s;
  border-bottom: 3px solid rgba(0,0,0,.3);
  position: relative;
}
.palette-block:hover { transform: scale(1.03); }
.palette-block:active { cursor: grabbing; opacity: .7; }

.block-type-print    { background: #00b894; color: #000; }
.block-type-var_set  { background: #0984e3; color: #fff; }
.block-type-var_get  { background: #74b9ff; color: #000; }
.block-type-if       { background: #e17055; color: #fff; }
.block-type-else     { background: #d35400; color: #fff; }
.block-type-for      { background: #6c5ce7; color: #fff; }
.block-type-for_list { background: #a29bfe; color: #000; }
.block-type-while    { background: #fd79a8; color: #fff; }
.block-type-end      { background: #636e72; color: #fff; }
.block-type-compare  { background: #fdcb6e; color: #000; }
.block-type-arith    { background: #00BCD4; color: #000; }
.block-type-string   { background: #55efc4; color: #000; }
.block-type-number   { background: #f39c12; color: #fff; }
.block-type-def      { background: #e84393; color: #fff; }
.block-type-call     { background: #c0392b; color: #fff; }
.block-type-list     { background: #27ae60; color: #fff; }

.block-workspace-wrap {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 16px; display: flex; flex-direction: column;
}
.block-workspace-wrap h4 { font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }
.block-workspace {
  flex: 1; min-height: 320px; background: var(--bg-base);
  border: 2px dashed var(--border); border-radius: var(--radius-sm);
  padding: 12px; display: flex; flex-direction: column; gap: 4px;
  overflow-y: auto; position: relative;
}
.workspace-hint { color: var(--text-muted); font-size: 14px; text-align: center; margin: auto; padding: 20px; }
.workspace-block {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: 6px; cursor: grab; user-select: none;
  font-size: 13px; font-family: monospace; font-weight: 600;
  border-bottom: 3px solid rgba(0,0,0,.3); position: relative;
  animation: blockIn .15s ease;
}
@keyframes blockIn { from { transform: scale(.9); opacity: .5; } to { transform: scale(1); opacity: 1; } }
.workspace-block:active { cursor: grabbing; }
.workspace-block .block-delete {
  margin-left: auto; cursor: pointer; opacity: .5; font-size: 12px; font-weight: 700;
  line-height: 1; background: rgba(0,0,0,.2); border-radius: 4px; padding: 2px 6px;
}
.workspace-block .block-delete:hover { opacity: 1; background: rgba(255,0,0,.3); }
.workspace-block input, .workspace-block select {
  background: rgba(0,0,0,.25); border: 1px solid rgba(255,255,255,.2);
  border-radius: 4px; color: inherit; font-family: monospace; font-size: 12px;
  padding: 2px 6px; width: 80px;
}
.workspace-block input:focus, .workspace-block select:focus { outline: none; border-color: white; }
.block-indent { margin-left: 24px; }

.block-controls { display: flex; gap: 10px; margin-top: 12px; }

/* ── Code Editor ───────────────────────────────────────────────────────── */
.code-editor-wrap {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md);
}
.code-editor-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; border-bottom: 1px solid var(--border);
  font-size: 13px; color: var(--text-secondary);
}
.code-editor {
  width: 100%; min-height: 280px; padding: 16px;
  background: #0B1120; color: var(--accent-yellow);
  font-family: 'Consolas', monospace; font-size: 14px; line-height: 1.7;
  border: none; resize: vertical; border-bottom: 1px solid var(--border);
}
.code-editor:focus { outline: none; }
.code-controls { padding: 12px 16px; }

/* Output */
.output-panel {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md);
  margin-top: 16px;
}
.output-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; border-bottom: 1px solid var(--border);
  font-size: 13px; color: var(--text-secondary);
}
.output-content {
  padding: 16px; font-family: monospace; font-size: 14px; line-height: 1.7;
  white-space: pre-wrap; min-height: 60px; color: var(--accent-green);
}
.result-msg { padding: 0 16px 16px; }
.result-error, .result-wrong {
  padding: 10px 14px; background: rgba(255,123,114,.1); border: 1px solid var(--accent-red);
  border-radius: var(--radius-sm); color: var(--accent-red); font-size: 14px;
}

/* Theory popup */
.theory-popup {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  z-index: 500;
}
.theory-popup-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.7); }
.theory-popup-card {
  position: relative; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px; max-width: 680px; width: 90%;
  max-height: 80vh; overflow-y: auto; z-index: 1;
}
.theory-popup-close {
  position: absolute; top: 16px; right: 16px;
  background: var(--bg-elevated); border: none; color: var(--text-secondary);
  width: 32px; height: 32px; border-radius: 50%; cursor: pointer; font-size: 16px;
}
.theory-popup-content { margin-top: 8px; }

/* Success overlay */
.success-overlay {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.8); z-index: 600;
}
.success-card {
  background: linear-gradient(135deg, #1a0d00, #0B1120);
  border: 2px solid var(--accent-green); border-radius: var(--radius-xl);
  padding: 40px; text-align: center; max-width: 440px; width: 90%;
  box-shadow: 0 0 60px rgba(255,102,0,.3);
  animation: successIn .4s cubic-bezier(.34,1.56,.64,1);
}
@keyframes successIn { from { transform: scale(.5); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.success-emoji { font-size: 64px; margin-bottom: 16px; animation: bounceEmoji .5s .1s both; }
@keyframes bounceEmoji { from { transform: scale(0); } to { transform: scale(1); } }
.success-card h2 { font-size: 28px; color: var(--accent-green); margin-bottom: 8px; }
.success-card p { color: var(--text-secondary); margin-bottom: 16px; }
.success-xp { font-size: 16px; color: var(--accent-yellow); margin-bottom: 16px; }
.new-ach { background: rgba(188,140,255,.15); border: 1px solid var(--accent-purple); border-radius: var(--radius-sm); padding: 8px 14px; margin-bottom: 8px; color: var(--accent-purple); font-size: 14px; }
.success-btns { display: flex; gap: 12px; justify-content: center; margin-top: 20px; }

/* hidden helper */
.hidden { display: none !important; }

/* ── Shop ──────────────────────────────────────────────────────────────── */
.page-shop { max-width: 1200px; margin: 0 auto; }
.xp-display { font-size: 17px; color: var(--accent-yellow); margin-top: 6px; font-weight: 600; }
.shop-section { margin-bottom: 32px; }

.cases-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.case-card {
  background: var(--bg-card); border: 2px solid var(--case-color, var(--border));
  border-radius: var(--radius-lg); padding: 20px; text-align: center;
  transition: transform .2s, box-shadow .2s;
  display: flex; flex-direction: column;
}
.case-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,.4); }
.case-emoji { font-size: 52px; margin-bottom: 10px; }
.case-name { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.case-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 10px; line-height: 1.5; }
.case-avatars-preview { display: flex; justify-content: center; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }
.av-preview { font-size: 24px; }
.av-rare { filter: drop-shadow(0 0 4px #74b9ff); }
.av-epic { filter: drop-shadow(0 0 4px #bc8cff); }
.av-legendary { filter: drop-shadow(0 0 6px #f1e05a) drop-shadow(0 0 12px #f1e05a); }
.case-price { font-size: 16px; color: var(--accent-yellow); font-weight: 700; margin-bottom: 12px; margin-top: auto; }

.avatars-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 12px; }
.avatar-card {
  background: var(--bg-card); border: 2px solid var(--border);
  border-radius: var(--radius-md); padding: 14px 10px; text-align: center; transition: all .2s;
}
.avatar-card:hover { transform: translateY(-2px); }
.avatar-card.owned { border-color: rgba(255,102,0,.25); background: rgba(255,102,0,.08); }
.avatar-card.active { border-color: var(--accent-green); box-shadow: var(--shadow-glow-green); }
.avatar-emoji { font-size: 42px; margin-bottom: 8px; }
.avatar-name { font-size: 13px; font-weight: 600; margin-bottom: 5px; color: var(--text-primary); }
.avatar-price { font-size: 13px; color: var(--accent-yellow); margin-bottom: 8px; font-weight: 600; }
.rarity-badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 700; margin-bottom: 8px; }

/* ── Battle Pass ───────────────────────────────────────────────────────── */
.battle-pass {
  background: linear-gradient(135deg, #1a0d00, #111D33);
  border: 1px solid rgba(255,102,0,.3); border-radius: var(--radius-lg);
  padding: 24px; margin-top: 32px; margin-bottom: 24px;
}
.bp-title { font-size: 20px; font-weight: 800; color: var(--accent-green); margin-bottom: 6px; }
.bp-subtitle { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; }
.bp-bar-wrap { position: relative; margin-bottom: 16px; }
.bp-bar-bg { height: 16px; background: var(--bg-base); border-radius: 8px; overflow: visible; position: relative; }
.bp-bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent-green), #FF8C00); border-radius: 8px; transition: width .8s; }
.bp-milestones { display: flex; justify-content: space-between; margin-top: 8px; }
.bp-milestone { text-align: center; font-size: 11px; color: var(--text-muted); position: relative; }
.bp-milestone.reached { color: var(--accent-green); font-weight: 700; }
.bp-milestone-icon { font-size: 20px; display: block; margin-bottom: 2px; }
.bp-tiers { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.bp-tier {
  flex: 1; min-width: 80px; background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 8px 6px; text-align: center; font-size: 12px;
}
.bp-tier.reached { background: rgba(255,102,0,.15); border-color: rgba(255,102,0,.4); }
.bp-tier-icon { font-size: 22px; display: block; margin-bottom: 4px; }
.bp-tier-xp { color: var(--text-muted); font-size: 11px; }
.rarity-common  { background: rgba(99,110,114,.3); color: #b2bec3; }
.rarity-rare    { background: rgba(116,185,255,.2); color: #74b9ff; }
.rarity-epic    { background: rgba(188,140,255,.2); color: #bc8cff; }
.rarity-legendary { background: rgba(241,224,90,.2); color: #f1e05a; }
body.light-theme .rarity-common   { background: rgba(90,100,110,.12);  color: #4A5568; }
body.light-theme .rarity-rare     { background: rgba(30,110,240,.1);   color: #1565C0; }
body.light-theme .rarity-epic     { background: rgba(110,40,200,.1);   color: #6B21A8; }
body.light-theme .rarity-legendary { background: rgba(138,96,0,.12);   color: #8A6000; }
.active-badge { font-size: 12px; color: var(--accent-green); display: block; }

/* Case modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.85); display: flex; align-items: center; justify-content: center; z-index: 700; }
.modal-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 40px; text-align: center; min-width: 300px; }
.case-open-card { min-width: 360px; }
.spinning-case { font-size: 80px; animation: spin 1.5s linear infinite; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.case-result { text-align: center; }
.won-avatar { font-size: 80px; margin-bottom: 16px; animation: wonBounce .5s cubic-bezier(.34,1.56,.64,1); }
@keyframes wonBounce { from { transform: scale(0); } to { transform: scale(1); } }
.won-name { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.won-xp { font-size: 14px; color: var(--text-secondary); margin-top: 8px; }

/* ── Assignment page (student) ─────────────────────────────────────────── */
.page-assignments { max-width: 800px; margin: 0 auto; }
.assignments-container { display: flex; flex-direction: column; gap: 16px; max-height: 72vh; overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--border) transparent; padding-right: 2px; }
.assignment-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px;
}
.assignment-card.graded { border-color: rgba(255,102,0,.25); }
.assignment-card.submitted { border-color: rgba(88,166,255,.4); }
.assignment-card-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 10px; }
.assignment-card-header h3 { font-size: 16px; }
.assignment-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 10px; }
.assignment-due { font-size: 13px; color: var(--accent-orange); margin-bottom: 10px; }
.feedback-block { background: rgba(88,166,255,.08); border-left: 3px solid var(--accent-blue); padding: 12px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin-bottom: 10px; font-size: 14px; }
.submit-section { border-top: 1px solid var(--border); padding-top: 14px; margin-top: 14px; }
.submit-form { display: flex; flex-direction: column; gap: 10px; }
.submit-file { display: flex; align-items: center; }
.file-label { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; font-size: 13px; color: var(--text-secondary); }
.file-input { display: none; }

.badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-success { background: rgba(255,102,0,.15); color: var(--accent-green); }
.badge-info    { background: rgba(88,166,255,.15); color: var(--accent-blue); }
.badge-warning { background: rgba(255,166,87,.15); color: var(--accent-orange); }
.badge-danger  { background: rgba(255,85,85,.15);  color: var(--accent-red); }
.badge-count   { background: var(--accent-red); color: #fff; border-radius: 10px; padding: 0 6px; font-size: 11px; margin-left: 4px; }

.empty-page { text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.empty-page .empty-icon { font-size: 56px; margin-bottom: 16px; }
.empty-page h2 { font-size: 22px; color: var(--text-primary); margin-bottom: 8px; }

/* ── Teacher pages ─────────────────────────────────────────────────────── */
.page-form { max-width: 700px; margin: 0 auto; }
.form-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; }
.form-card-header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.form-group { margin-bottom: 18px; }
.form-actions { display: flex; gap: 12px; margin-top: 24px; }

.teacher-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }
.teacher-actions .btn { justify-content: flex-start; }

.group-card { display: flex; align-items: center; gap: 12px; padding: 12px; background: var(--bg-base); border-radius: var(--radius-sm); margin-bottom: 8px; }
.group-icon { font-size: 24px; }
.group-name { font-weight: 600; font-size: 15px; }
.group-count { font-size: 12px; color: var(--text-muted); }

/* File download link in submissions */
.sub-file a { color: var(--accent-blue); text-decoration: underline; }
.sub-file a:hover { color: var(--text-primary); }

.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th { padding: 10px 12px; text-align: left; color: var(--text-muted); border-bottom: 1px solid var(--border); font-weight: 500; }
.data-table td { padding: 10px 12px; border-bottom: 1px solid rgba(48,54,61,.5); }
.data-table tr:hover td { background: rgba(255,255,255,.02); }

.submissions-list { display: flex; flex-direction: column; gap: 16px; max-width: 900px; margin: 0 auto; }
.submission-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px; }
.submission-card.graded { border-color: rgba(255,102,0,.3); }
.sub-header { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 10px; }
.sub-student { font-weight: 600; }
.sub-assignment { color: var(--text-secondary); font-size: 14px; }
.sub-date { font-size: 12px; color: var(--text-muted); }
.sub-content { background: var(--bg-base); border-radius: var(--radius-sm); padding: 12px; font-size: 14px; margin-bottom: 10px; white-space: pre-wrap; }
.sub-file { font-size: 13px; color: var(--accent-blue); }
.sub-grade { font-size: 14px; color: var(--accent-green); margin-top: 8px; display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.grade-form { border-top: 1px solid var(--border); padding-top: 12px; margin-top: 12px; }
.grade-inputs { display: flex; gap: 10px; flex-wrap: wrap; }

/* ── Chat ──────────────────────────────────────────────────────────────── */
.page-chat, .parent-chat-section { max-width: 1000px; margin: 0 auto; }
.parent-chat-section { margin-top: 32px; }
.chat-layout { display: grid; grid-template-columns: 220px 1fr; gap: 0; height: 520px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.chat-sidebar { background: var(--bg-base); border-right: 1px solid var(--border); overflow-y: auto; }
.chat-sidebar-title { padding: 16px; font-size: 13px; font-weight: 600; color: var(--text-muted); border-bottom: 1px solid var(--border); }
.contact-item { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--border); transition: background .15s; color: var(--text-primary); }
.contact-item:hover { background: var(--bg-elevated); text-decoration: none; }
.contact-item.active { background: rgba(255,102,0,.1); }
.contact-avatar { font-size: 22px; }
.contact-name { font-size: 14px; }
.no-contacts { padding: 16px; font-size: 13px; color: var(--text-muted); }

.chat-main { display: flex; flex-direction: column; min-height: 0; overflow: hidden; }
.chat-header { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); font-weight: 600; flex-shrink: 0; }
.chat-back-btn { display: none; align-items: center; justify-content: center; width: 32px; height: 32px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 50%; color: var(--text-primary); text-decoration: none; font-size: 16px; flex-shrink: 0; }
.messages-area { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 10px; min-height: 0; scroll-behavior: smooth; }
.chat-input-form { flex-shrink: 0; display: flex; padding: 12px; gap: 10px; border-top: 1px solid var(--border); background: var(--bg-card); }
.message-wrap { display: flex; }
.message-wrap.mine { justify-content: flex-end; }
.message-wrap.theirs { justify-content: flex-start; }
.message-bubble {
  max-width: 70%; padding: 10px 14px; border-radius: 16px; font-size: 14px; position: relative;
}
.mine .message-bubble { background: rgba(255,102,0,.2); border-bottom-right-radius: 4px; color: var(--text-primary); }
.theirs .message-bubble { background: var(--bg-elevated); border-bottom-left-radius: 4px; }
.message-time { display: block; font-size: 11px; color: var(--text-muted); margin-top: 4px; }
/* (consolidated into the rule above) */
.chat-input { flex: 1; padding: 10px 14px; background: var(--bg-base); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-primary); font-size: 14px; }
.chat-input:focus { outline: none; border-color: var(--accent-green); }
.chat-send { padding: 10px 20px; }
.chat-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; flex: 1; color: var(--text-muted); }
.chat-empty-icon { font-size: 48px; margin-bottom: 12px; }

/* ── Admin ─────────────────────────────────────────────────────────────── */
.admin-tabs { display: flex; gap: 4px; margin-bottom: 24px; border-bottom: 2px solid var(--border); padding-bottom: 0; }
.admin-tab-btn {
  padding: 10px 20px; border: none; background: none; color: var(--text-secondary);
  font-size: 15px; font-weight: 600; cursor: pointer; border-bottom: 3px solid transparent;
  margin-bottom: -2px; transition: all .2s; border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.admin-tab-btn:hover { color: var(--text-primary); background: var(--bg-elevated); }
.admin-tab-btn.active { color: var(--accent-green); border-bottom-color: var(--accent-green); }
.admin-tab-panel { display: none; }
.admin-tab-panel.active { display: block; }

.user-filters { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.user-search { flex: 1; min-width: 200px; }
.group-detail-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 16px; overflow: visible; }
.group-detail-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; cursor: pointer; border-radius: var(--radius-md); }
.group-detail-header:hover { background: var(--bg-elevated); }
.group-detail-body { padding: 16px 20px; border-top: 1px solid var(--border); display: none; overflow: visible; }
.group-detail-body.open { display: block; }
.activity-chart { display: flex; align-items: flex-end; gap: 6px; height: 60px; margin: 12px 0; }
.activity-bar { background: var(--accent-green); border-radius: 3px 3px 0 0; min-width: 20px; opacity: .7; transition: opacity .2s; }
.activity-bar:hover { opacity: 1; }
.activity-label { font-size: 11px; color: var(--text-secondary); text-align: center; }
.student-link { color: var(--accent-blue); cursor: pointer; text-decoration: underline; }
.student-link:hover { color: var(--accent-green); }
.parent-link-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.admin-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 20px; }
.inline-form { display: flex; gap: 10px; flex-wrap: wrap; }
.leaderboard { display: flex; flex-direction: column; gap: 8px; }
.leaderboard-row { display: flex; align-items: center; gap: 12px; padding: 8px; background: var(--bg-base); border-radius: var(--radius-sm); }
.lb-rank { width: 24px; font-weight: 700; color: var(--text-muted); font-size: 13px; }
.lb-avatar { font-size: 20px; }
.lb-name { flex: 1; font-size: 14px; }
.lb-xp { font-size: 12px; color: var(--accent-yellow); }
.lb-bar { width: 80px; height: 6px; background: var(--bg-elevated); border-radius: 3px; overflow: hidden; }
.lb-bar-fill { height: 100%; background: var(--accent-green); border-radius: 3px; width: 0; transition: width .5s; }

.role-badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 600; }
.role-badge.role-student { background: rgba(0,184,148,.2);  color: #00b894; }
.role-badge.role-teacher { background: rgba(9,132,227,.2);  color: #0984e3; }
.role-badge.role-admin   { background: rgba(108,92,231,.2); color: #6c5ce7; }
.role-badge.role-parent  { background: rgba(253,121,168,.2);color: #fd79a8; }

.groups-manage-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.group-manage-card { background: var(--bg-base); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 16px; }
.group-manage-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.group-manage-header h3 { font-size: 15px; }
.group-teacher { font-size: 13px; color: var(--text-secondary); margin-bottom: 10px; }
.group-members { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.member-chip { background: var(--bg-elevated); padding: 3px 10px; border-radius: 12px; font-size: 12px; color: var(--text-secondary); }
.add-student-form { display: flex; gap: 8px; }

/* ── Parent ────────────────────────────────────────────────────────────── */
.page-parent { max-width: 1100px; margin: 0 auto; }
.child-section { margin-bottom: 32px; }
.child-header { display: flex; align-items: center; gap: 16px; padding: 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); margin-bottom: 20px; }
.child-avatar { font-size: 48px; }
.child-info h2 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.child-stats { display: flex; gap: 16px; font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; }
.parent-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.note-item { display: flex; align-items: flex-start; gap: 12px; padding: 12px; background: var(--bg-base); border-radius: var(--radius-sm); margin-bottom: 8px; }
.note-remark { border-left: 3px solid var(--accent-orange); }
.note-achievement { border-left: 3px solid var(--accent-green); }
.note-icon { font-size: 20px; }
.note-text { font-size: 14px; }
.note-date { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ── Page headers ──────────────────────────────────────────────────────── */
.page-header { margin-bottom: 24px; }
.page-header h1 { font-size: 26px; font-weight: 700; }

/* ── Student chat page ─────────────────────────────────────────────────── */
.page-student-chat { max-width: 900px; margin: 0 auto; }

/* ── Empty / visible states ────────────────────────────────────────────── */
.empty-page p { color: var(--text-secondary); font-size: 15px; }
.empty-state p { color: var(--text-secondary); font-size: 14px; }

/* ── Responsive ────────────────────────────────────────────────────────── */
/* ── Hamburger & Mobile Menu ──────────────────────────────────────────────── */
.hamburger {
  display: none; flex-direction: column; justify-content: space-around;
  width: 36px; height: 36px; background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  cursor: pointer; padding: 7px; gap: 4px; flex-shrink: 0;
}
.hamburger span {
  display: block; height: 2px; background: var(--text-primary);
  border-radius: 2px; transition: all .25s;
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,.55);
  z-index: 299;
}
.mobile-menu-overlay.open { display: block; }

.mobile-menu {
  position: fixed; top: 0; right: -100%; width: min(320px, 85vw); height: 100dvh;
  background: var(--bg-card); border-left: 1px solid var(--border);
  z-index: 300; display: flex; flex-direction: column;
  transition: right .3s ease; overflow-y: auto; padding-bottom: 24px;
}
.mobile-menu.open { right: 0; }

.mobile-menu-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  font-size: 16px; font-weight: 700; color: var(--text-primary);
}
.mobile-menu-close {
  background: var(--bg-elevated); border: none; color: var(--text-secondary);
  width: 32px; height: 32px; border-radius: 50%; cursor: pointer; font-size: 16px;
}
.mobile-xp-bar {
  padding: 12px 20px; border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.mobile-nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 20px; color: var(--text-primary); text-decoration: none;
  font-size: 16px; border-bottom: 1px solid var(--border);
  transition: background .15s;
}
.mobile-nav-link:hover, .mobile-nav-link:active { background: var(--bg-elevated); }
.mobile-menu-footer { margin-top: auto; padding-top: 12px; }
.mobile-theme-btn {
  width: 100%; text-align: left; padding: 14px 20px;
  background: none; border: none; border-bottom: 1px solid var(--border);
  color: var(--text-primary); font-size: 16px; cursor: pointer;
}
.mobile-logout { color: var(--accent-red) !important; }

/* ── Responsive breakpoints ───────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .nav-user { gap: 8px; }
  .streak-badge { display: none; }
  .xp-pill { padding: 4px 10px; gap: 6px; }
  .user-name { display: none; }
}

@media (max-width: 900px) {
  .library-layout { grid-template-columns: 1fr; }
  .lib-sidebar { position: static; }
}

/* ── Medium screens: hero wraps difficulty to second row ── */
@media (max-width: 860px) {
  .hero-difficulty {
    flex-basis: 100%;
    text-align: left;
    padding-left: calc(56px + 20px); /* align under hero-info, past avatar */
  }
  .hero-difficulty .diff-toggle { justify-content: flex-start; }
}

@media (max-width: 768px) {
  /* Layout */
  .main-content { padding: 12px; overflow-x: hidden; }
  .page-levelmap { width: 100%; overflow-x: hidden; }

  /* Navbar: hide desktop links, show hamburger */
  .navbar { padding: 0 12px; height: 52px; }
  .nav-links { display: none; }
  .nav-user { gap: 6px; }
  .xp-pill { font-size: 11px; padding: 3px 8px; gap: 4px; }
  .xp-pill .lv-badge { display: none; }
  .theme-toggle { width: 32px; height: 32px; font-size: 14px; padding: 0; }
  .hamburger { display: flex; }

  /* Student hero */
  .student-hero { flex-direction: column; gap: 12px; align-items: flex-start; padding: 16px; }
  .hero-avatar { font-size: 40px; }
  .hero-info { width: 100%; min-width: 0; }
  .hero-name { font-size: 18px; }
  .hero-level { font-size: 13px; }
  .hero-difficulty { flex-basis: auto; padding-left: 0; text-align: left; width: 100%; }
  .hero-difficulty .diff-toggle { justify-content: flex-start; }
  .diff-btn { padding: 7px 12px; font-size: 12px; }

  /* Stats grid: 2 columns */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 14px 10px; }
  .stat-icon { width: 44px; height: 44px; font-size: 20px; }
  .stat-value { font-size: 24px; }

  /* Dashboard */
  .dashboard-grid { grid-template-columns: 1fr; }
  .quick-actions { gap: 8px; }
  .quick-card { padding: 12px; }
  .quick-icon { font-size: 24px; }

  /* Battle pass */
  .battle-pass { padding: 16px; }
  .bp-tiers { gap: 4px; }
  .bp-tier { min-width: 60px; padding: 8px 4px; font-size: 11px; }
  .bp-tier-icon { font-size: 18px; }

  /* Level map */
  .zz-wrap { width: 100%; box-sizing: border-box; }
  .zz-container { max-width: none !important; margin: 0 !important; }

  /* Level page */
  .level-header { flex-wrap: wrap; gap: 8px; padding: 12px; }
  .level-title-block h1 { font-size: 18px; }
  .block-editor { grid-template-columns: 1fr; }
  .block-palette { border-right: none; border-bottom: 1px solid var(--border); max-height: 160px; overflow-y: auto; }
  .palette-blocks { display: flex; flex-wrap: wrap; gap: 6px; }
  .palette-block { font-size: 12px; padding: 6px 8px; }
  .code-editor { font-size: 13px; min-height: 180px; }
  .output-content { font-size: 13px; }

  /* Chat — mobile full-screen mode */
  .chat-layout {
    display: block;
    height: calc(100dvh - 76px);
  }
  .chat-layout:not(.has-contact) .chat-sidebar {
    display: flex; flex-direction: column;
    height: 100%; max-height: none;
    border-right: none; border-bottom: none;
    overflow-y: auto;
  }
  .chat-layout:not(.has-contact) .chat-main { display: none; }
  .chat-layout.has-contact .chat-sidebar { display: none; }
  .chat-layout.has-contact .chat-main {
    display: flex; flex-direction: column;
    height: 100%; min-height: 0; overflow: hidden;
  }
  .chat-layout.has-contact .messages-area { flex: 1; overflow-y: auto; min-height: 0; }
  .chat-layout.has-contact .chat-input-form { flex-shrink: 0; }
  .chat-back-btn { display: flex !important; }
  /* Contact list on mobile */
  .contact-item { padding: 14px 16px; font-size: 15px; }
  .contact-avatar { font-size: 26px; }
  .chat-sidebar-title { font-size: 13px; padding: 10px 16px 6px; }
  /* Bubbles */
  .message-bubble { font-size: 14px; max-width: 85%; }
  .message-time { font-size: 11px; }

  /* Admin */
  .admin-grid { grid-template-columns: 1fr; }
  .admin-tabs { flex-wrap: wrap; gap: 4px; }
  .admin-tab-btn { font-size: 13px; padding: 8px 10px; }
  .user-filters { flex-direction: column; }
  .data-table { font-size: 13px; }
  .data-table th, .data-table td { padding: 8px 6px; }

  /* Teacher */
  .teacher-actions { flex-direction: column; }
  .grade-inputs { flex-direction: column; }
  .submissions-list > * { padding: 12px; }

  /* Parent */
  .parent-grid { grid-template-columns: 1fr; }
  .child-header { flex-direction: column; gap: 12px; }

  /* Tables */
  .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* Modules */
  .modules-grid { grid-template-columns: 1fr; width: 100%; }
  .module-card { max-width: 100%; box-sizing: border-box; }
  .module-desc { white-space: normal; }
  .module-icon { width: 40px; height: 40px; font-size: 20px; flex-shrink: 0; }
  .module-title { font-size: 14px; }
  .module-stats { font-size: 11px; }

  /* Module page header */
  .page-module { max-width: 100%; padding: 0; }
  .module-header { padding: 14px; gap: 10px; margin-bottom: 20px; }
  .module-header-icon { width: 44px; height: 44px; font-size: 22px; }
  .module-header-text h1 { font-size: 17px; }
  .module-header-text p { font-size: 13px; }
  .back-btn { font-size: 13px; padding: 5px 10px; }

  /* Level nodes */
  .level-node { max-width: 100%; padding: 12px 14px; gap: 12px; }
  .level-node-inner { width: 38px; height: 38px; }
  .level-node-icon { font-size: 18px; }
  .level-node-title { font-size: 14px; }
  .level-connector { height: 24px; }

  /* Level page */
  .page-level { max-width: 100%; }
  .level-header { padding: 0 0 8px; }
  .level-title-block h1 { font-size: 17px; }
  .xp-badge { font-size: 12px; padding: 2px 10px; }

  /* Theory page */
  .theory-container { max-width: 100%; }
  .theory-content { padding: 16px; font-size: 14px; margin-bottom: 16px; }
  .theory-content h2 { font-size: 17px; }
  .theory-content h3 { font-size: 15px; }
  .theory-content pre { padding: 10px 12px; }
  .theory-content code { font-size: 13px; }
  .theory-content .tip { font-size: 13px; padding: 10px 12px; }

  /* Shop */
  .avatars-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }

  /* Forms */
  .inline-form { flex-direction: column; gap: 8px; }
  .parent-link-form { flex-direction: column; gap: 8px; }

  /* Auth */
  .auth-card { padding: 24px 16px; }

  /* Motivation banner */
  .motivation-banner { padding: 12px 16px; font-size: 14px; }
}

/* ── Module list dividers (issue 9) ────────────────────────────────────── */
.module-divider {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 0;
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 0.04em;
}
.module-divider::before, .module-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Bonus challenge cards in module list (issue 10) ───────────────────── */
.bonus-module-card {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: linear-gradient(135deg, rgba(255,215,0,.07), rgba(255,102,0,.04));
  border: 1.5px dashed rgba(255,215,0,.35);
  border-radius: var(--radius-md);
  cursor: default;
  opacity: 0.82;
  transition: opacity .2s;
}
.bonus-module-card:hover { opacity: 1; }
.bonus-module-card { cursor: pointer; }
.bonus-module-card.bm-done { border-color: rgba(255,102,0,.5); background: linear-gradient(135deg, rgba(255,102,0,.08), rgba(255,215,0,.05)); }
.bonus-module-icon { font-size: 26px; flex-shrink: 0; }
.bonus-module-info { flex: 1; min-width: 0; }
.bonus-module-title { font-size: 14px; font-weight: 700; color: #FFD700; }
.bonus-module-desc { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.bonus-module-badge {
  flex-shrink: 0;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 10px;
  background: rgba(255,215,0,.12);
  color: #FFD700;
  white-space: nowrap;
}

/* ── Bonus nodes on zigzag map (issue 10) ──────────────────────────────── */
.zz-bonus-connector {
  fill: none;
  stroke: rgba(255,215,0,.35);
  stroke-width: 2;
  stroke-dasharray: 5,4;
}
.zz-bonus {
  position: absolute;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 3;
  cursor: pointer;
  transition: opacity .2s, transform .2s;
}
.zz-bonus:hover { transform: translate(-50%, -50%) scale(1.1); }
.zz-bonus-ring {
  position: absolute;
  width: 74px;
  height: 74px;
  border-radius: 50%;
  border: 2px solid rgba(255,215,0,.3);
  animation: pulse-ring 2.2s ease-in-out infinite;
}
.zz-bonus-inner {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 35%, #2a2000, #0d1a00);
  border: 3px dashed rgba(255,215,0,.65);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 0 18px rgba(255,215,0,.25), inset 0 0 12px rgba(255,215,0,.06);
  position: relative;
}
.zz-bonus-label {
  font-size: 10px;
  font-weight: 700;
  color: #FFD700;
  margin-top: 8px;
  text-align: center;
  white-space: nowrap;
  text-shadow: 0 1px 6px rgba(0,0,0,.9);
  letter-spacing: 0.03em;
}