:root {
  --bg: #0b1220;
  --bg-soft: #111a2e;
  --panel: rgba(255,255,255,0.08);
  --panel-border: rgba(255,255,255,0.12);
  --text: #e8eefc;
  --muted: #b8c4e0;
  --accent: #7c9cff;
  --accent-2: #4de2c5;
  --danger: #ff6b6b;
  --warning: #ffcc66;
  --success: #7fffb8;
  --shadow: 0 22px 48px rgba(0, 0, 0, 0.22);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background: radial-gradient(circle at top left, #142345 0, #0b1220 45%, #07101e 100%);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
.hidden { display: none !important; }
.small { font-size: .85rem; }
.muted { color: var(--muted); }
.notice-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 20px;
  background: rgba(255, 211, 107, 0.12);
  border-bottom: 1px solid rgba(255, 211, 107, 0.25);
  position: sticky; top: 0; z-index: 30;
  backdrop-filter: blur(12px);
}
.notice-pill {
  background: var(--warning); color: #332400; font-weight: 800;
  border-radius: 999px; padding: 6px 10px; font-size: .75rem;
}
.site-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 24px; gap: 16px;
  position: sticky; top: 44px; z-index: 25;
  background: rgba(11, 18, 32, 0.72); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.brand-wrap { display: flex; align-items: center; gap: 14px; }
.brand-wrap h1 { margin: 0; font-size: 1.35rem; }
.eyebrow { font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 4px; }
.menu-toggle {
  display: none; border: 1px solid var(--panel-border); background: var(--panel); color: var(--text);
  border-radius: 14px; width: 44px; height: 44px; font-size: 1.2rem;
}
.top-nav { display: flex; gap: 10px; flex-wrap: wrap; }
.top-nav a {
  padding: 10px 14px; border-radius: 12px; color: var(--muted); font-weight: 600;
}
.top-nav a:hover, .top-nav a:focus { background: rgba(255,255,255,.08); color: var(--text); }
.profile-btn {
  display: flex; align-items: center; gap: 10px; min-width: 180px;
  border: 1px solid var(--panel-border); background: var(--panel); color: var(--text);
  border-radius: 18px; padding: 8px 12px; cursor: pointer;
}
.profile-btn small { display: block; color: var(--muted); font-size: .7rem; }
.profile-avatar {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #05101f;
}
.page-shell {
  display: grid; grid-template-columns: 320px 1fr; gap: 22px;
  padding: 24px;
}
.sidebar, .content-area { min-width: 0; }
.panel {
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: 24px;
  box-shadow: var(--shadow); backdrop-filter: blur(14px);
}
.sidebar { display: flex; flex-direction: column; gap: 18px; position: sticky; top: 136px; height: max-content; }
.content-area { display: flex; flex-direction: column; gap: 18px; }
.profile-panel, .quick-panel, .social-panel, .contact-panel, .hero, .filters-panel, .test-panel, .results-panel, .history-panel { padding: 20px; }
.hero { display: grid; grid-template-columns: 1.5fr 1fr; gap: 20px; align-items: center; }
.hero h2 { margin: 0 0 10px; font-size: clamp(1.5rem, 3vw, 2.4rem); }
.hero-copy { color: var(--muted); line-height: 1.6; margin: 0; }
.stats-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px;
}
.stat-card {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.08);
  border-radius: 20px; padding: 16px;
}
.stat-card span { display: block; color: var(--muted); font-size: .85rem; }
.stat-card strong { display: block; margin-top: 8px; font-size: 1.6rem; }
.panel-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.panel-head.between { justify-content: space-between; }
.panel-head h2 { margin: 0; font-size: 1.05rem; }
.badge, .timer-chip {
  display: inline-flex; align-items: center; gap: 8px; border-radius: 999px;
  background: rgba(124, 156, 255, 0.18); color: #dbe5ff; padding: 8px 12px; font-weight: 700; font-size: .82rem;
}
.field-label { display: block; margin: 0 0 8px; color: var(--muted); font-size: .9rem; }
.text-input, select {
  width: 100%; background: rgba(255,255,255,.06); color: var(--text);
  border: 1px solid rgba(255,255,255,.12); border-radius: 16px; padding: 14px 15px; outline: none;
}
.text-input:focus, select:focus { border-color: var(--accent); }
.primary-btn, .secondary-btn, .ghost-btn {
  border: 0; border-radius: 16px; padding: 13px 16px; font-weight: 700; cursor: pointer;
  transition: transform .15s ease, opacity .15s ease, background .15s ease;
}
.primary-btn:hover, .secondary-btn:hover, .ghost-btn:hover { transform: translateY(-1px); }
.primary-btn { background: linear-gradient(135deg, var(--accent), #9eb4ff); color: #07101e; }
.secondary-btn { background: rgba(255,255,255,.09); color: var(--text); border: 1px solid rgba(255,255,255,.12); }
.ghost-btn { background: transparent; color: var(--muted); border: 1px dashed rgba(255,255,255,.18); }
.full { width: 100%; margin-bottom: 10px; }
.filter-grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px;
}
.toggle-grid {
  margin-top: 14px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px;
}
.toggle-chip {
  display: flex; gap: 10px; align-items: center; padding: 12px 14px; border-radius: 16px;
  background: rgba(255,255,255,.04); color: var(--muted);
}
.toggle-chip input { accent-color: var(--accent); }
.actions-row, .question-actions {
  display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px;
}
.question-card {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
  border-radius: 22px; padding: 20px;
}
.question-header { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; margin-bottom: 14px; }
.question-title { margin: 0; font-size: 1.2rem; line-height: 1.45; }
.question-meta { color: var(--muted); font-size: .9rem; }
.option-list { display: grid; gap: 12px; margin-top: 18px; }
.option-btn {
  width: 100%; text-align: left; border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.03);
  color: var(--text); border-radius: 18px; padding: 15px 16px; cursor: pointer;
}
.option-btn.selected { border-color: var(--accent); background: rgba(124, 156, 255, 0.16); }
.option-key {
  display: inline-flex; width: 28px; height: 28px; align-items: center; justify-content: center;
  border-radius: 999px; background: rgba(255,255,255,.08); margin-right: 10px; font-weight: 700;
}
.test-top-actions { display: flex; gap: 12px; align-items: center; }
.results-summary {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px;
}
.summary-card {
  background: rgba(255,255,255,.05); border-radius: 18px; padding: 16px;
}
.summary-card span { color: var(--muted); font-size: .85rem; display: block; }
.summary-card strong { font-size: 1.4rem; display: block; margin-top: 8px; }
.review-list, .history-list { display: grid; gap: 12px; }
.review-item, .history-item {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08); border-radius: 18px; padding: 16px;
}
.review-item.correct { border-color: rgba(127,255,184,.35); }
.review-item.wrong { border-color: rgba(255,107,107,.35); }
.review-item h3, .history-item h3 { margin: 0 0 8px; font-size: 1rem; }
.review-flags, .history-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.flag {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 999px;
  font-size: .78rem; background: rgba(255,255,255,.06); color: var(--muted);
}
.flag.good { background: rgba(127,255,184,.15); color: var(--success); }
.flag.bad { background: rgba(255,107,107,.14); color: #ffc3c3; }
.social-links { display: grid; gap: 10px; }
.social-link {
  display: flex; align-items: center; gap: 10px; padding: 12px 14px;
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08); border-radius: 16px;
}
.social-link svg { width: 18px; height: 18px; }
code {
  padding: 3px 6px; background: rgba(255,255,255,.08); border-radius: 8px; font-family: ui-monospace, SFMono-Regular, monospace;
}
@media (max-width: 1080px) {
  .page-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .hero, .filter-grid, .results-summary { grid-template-columns: 1fr; }
  .toggle-grid { grid-template-columns: 1fr; }
}
@media (max-width: 840px) {
  .site-header { flex-wrap: wrap; }
  .menu-toggle { display: inline-grid; place-items: center; }
  .top-nav { display: none; width: 100%; padding-top: 8px; }
  .top-nav.open { display: flex; }
  .profile-btn { width: 100%; justify-content: center; }
}