:root {
  --bg: #06101e;
  --bg2: #0d1a33;
  --panel: rgba(255,255,255,0.08);
  --panel2: rgba(255,255,255,0.05);
  --line: rgba(255,255,255,0.12);
  --text: #eef4ff;
  --muted: #9fb1cf;
  --accent: #62d8ff;
  --accent-dark: #0c2a3b;
  --success: #1fd49a;
  --error: #ff6e84;
  --warn: #ffcc66;
  --shadow: 0 20px 48px rgba(0,0,0,0.28);
  --radius: 24px;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: Inter, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(98,216,255,0.16), transparent 22%),
    radial-gradient(circle at right, rgba(106,92,255,0.10), transparent 18%),
    linear-gradient(180deg, var(--bg2), var(--bg));
}
body { line-height: 1.45; }
button, input, select { font: inherit; }
a { color: inherit; text-decoration: none; }

.app-shell { max-width: 1460px; margin: 0 auto; padding: 20px; }

.topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 6px 0 18px;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), #7beaff);
  color: var(--accent-dark); font-weight: 900; font-size: 20px;
  box-shadow: 0 12px 30px rgba(95,208,255,0.28);
}
.brand-name { font-size: 28px; font-weight: 900; letter-spacing: -0.03em; }
.brand-sub, .muted { color: var(--muted); }
.top-links { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.top-links a {
  padding: 10px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: rgba(255,255,255,0.05); color: var(--muted);
}
.top-links a:hover { color: var(--text); border-color: rgba(255,255,255,0.22); }
.topbar-right { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }

.status-pill, .eyebrow, .mini-badge {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.06);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 800;
}
.mini-badge { padding: 6px 10px; font-size: 12px; }
.eyebrow { display: inline-flex; margin-bottom: 10px; color: #d9f7ff; }

.hero-banner {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: 22px;
  margin-bottom: 22px;
}
.hero-copy, .hero-side, .card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}
.hero-copy { padding: 30px; }
.hero-copy h1 {
  margin: 0 0 14px;
  font-size: clamp(34px, 5vw, 64px);
  line-height: .98;
  letter-spacing: -0.04em;
  max-width: 12ch;
}
.hero-side { padding: 22px; display: flex; flex-direction: column; gap: 14px; justify-content: center; }
.hero-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.hero-badges span {
  padding: 10px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: rgba(255,255,255,0.05); color: var(--muted); font-weight: 700;
}

.main-grid { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 22px; align-items: start; }
.left-col, .right-col { display: flex; flex-direction: column; gap: 22px; }
.auth-panel, .dashboard-panel, .game-panel, .info-panel { padding: 28px; }

.card-head, .dashboard-head, .between {
  display: flex; justify-content: space-between; gap: 16px; align-items: center; flex-wrap: wrap;
}

.info-grid, .profile-grid, .challenge-grid, .game-stats-grid, .room-sync-grid {
  display: grid; gap: 14px;
}
.info-grid { grid-template-columns: repeat(3,1fr); }
.profile-grid { grid-template-columns: repeat(2,1fr); margin: 20px 0 18px; }
.challenge-grid { grid-template-columns: repeat(2,1fr); margin-top: 20px; }
.game-stats-grid { grid-template-columns: repeat(4,1fr); margin: 18px 0 12px; }
.room-sync-grid { grid-template-columns: repeat(4,1fr); margin: 18px 0 12px; }

.mini-card, .profile-box, .player-card, .challenge-card, .subpanel, .stat-box, .quiz-card, .sync-box, .nation-item {
  background: var(--panel2); border: 1px solid var(--line); border-radius: 18px; padding: 16px;
}
.mini-label { color: var(--muted); font-size: 13px; font-weight: 700; }
.mini-value, .profile-value, .stat-value, .sync-value {
  margin-top: 8px; font-size: 22px; font-weight: 900; line-height: 1.15;
}
.smallish { font-size: 18px; }
.profile-value.small { font-size: 14px; font-weight: 700; word-break: break-word; }

.notice, .message-box, .room-box {
  margin-top: 20px; border-radius: 16px; padding: 14px 16px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.05);
}
.message-box.success { border-color: rgba(31,212,154,0.45); background: rgba(31,212,154,0.10); }
.message-box.error { border-color: rgba(255,110,132,0.45); background: rgba(255,110,132,0.10); }

.tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.tab {
  flex: 1; border: 1px solid var(--line); background: rgba(255,255,255,0.05); color: var(--text);
  padding: 12px 14px; border-radius: 16px; cursor: pointer; font-weight: 800;
}
.tab.active { background: rgba(95,208,255,0.16); border-color: rgba(95,208,255,0.35); }

.tab-content { display: none; }
.tab-content.active { display: block; }

.form-stack { display: flex; flex-direction: column; gap: 12px; }
.compact-form { margin-bottom: 12px; }
label { color: var(--muted); font-size: 14px; font-weight: 700; }
input, select {
  width: 100%; padding: 14px 16px; border-radius: 16px; border: 1px solid var(--line);
  background: rgba(255,255,255,0.08); color: var(--text); outline: none;
}
select option { color: #111; }

.btn {
  border: none; border-radius: 16px; padding: 13px 16px; cursor: pointer; font-weight: 900; transition: .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: linear-gradient(135deg, var(--accent), #7ee9ff); color: var(--accent-dark); }
.btn.secondary { background: rgba(255,255,255,0.08); color: var(--text); border: 1px solid var(--line); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.success { background: rgba(31,212,154,0.14); color: #c5fae8; border: 1px solid rgba(31,212,154,0.25); }
.btn.danger { background: rgba(255,110,132,0.14); color: #ffd5dd; border: 1px solid rgba(255,110,132,0.25); }
.btn.warn { background: rgba(255,204,102,0.14); color: #ffe5a8; border: 1px solid rgba(255,204,102,0.25); }
.full { width: 100%; margin-top: 10px; }
.head-actions, .room-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.lobby-toolbar {
  margin-top: 18px; margin-bottom: 14px; display: flex; justify-content: space-between;
  gap: 14px; align-items: center; flex-wrap: wrap;
}
.toolbar-title { font-size: 20px; font-weight: 900; }
.switch-row { display: flex; align-items: center; gap: 10px; }

.players-list, .challenge-list, .nation-list { display: flex; flex-direction: column; gap: 12px; }
.player-card { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; }
.player-main, .challenge-main { display: flex; flex-direction: column; gap: 6px; }
.player-name, .challenge-title { font-size: 18px; font-weight: 900; }
.player-meta, .challenge-meta { color: var(--muted); font-size: 14px; }
.player-actions, .challenge-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.challenge-card { display: flex; flex-direction: column; gap: 12px; }
.room-panel, .nation-panel { margin-top: 20px; }

.progress {
  height: 10px; background: rgba(255,255,255,0.08); border: 1px solid var(--line);
  border-radius: 999px; overflow: hidden; margin: 8px 0 18px;
}
.progress span {
  display: block; height: 100%; width: 0%; background: linear-gradient(90deg, #6a5cff, var(--accent));
}
.question-category {
  display: inline-flex; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--line);
  font-size: 12px; font-weight: 800; background: rgba(255,255,255,0.06);
}
.question-title { font-size: 28px; line-height: 1.15; margin: 16px 0 18px; }
.answers-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.answer-btn {
  text-align: left; border: 1px solid var(--line); background: rgba(255,255,255,0.05); color: var(--text);
  border-radius: 16px; padding: 16px; cursor: pointer; font-weight: 800;
}
.answer-btn.correct { background: rgba(31,212,154,0.14); border-color: rgba(31,212,154,0.35); }
.answer-btn.wrong { background: rgba(255,110,132,0.14); border-color: rgba(255,110,132,0.35); }

.hidden { display: none !important; }

@media (max-width: 1180px) {
  .topbar { grid-template-columns: 1fr; justify-items: start; }
  .hero-banner, .main-grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .info-grid, .profile-grid, .challenge-grid, .game-stats-grid, .answers-grid, .room-sync-grid { grid-template-columns: 1fr; }
  .player-card { grid-template-columns: 1fr; }
}