/* ── Theme tokens ────────────────────────────────────────────────────────────── */
:root[data-theme="dark"] {
  --bg:        #07080f;
  --surface:   #0e0f1e;
  --surface2:  #131425;
  --border:    #1e1f38;
  --text:      #e8e9f5;
  --text2:     #888;
  --text3:     #555;
  --shadow:    rgba(0,0,0,0.5);
  --input-bg:  #0a0b18;
  --accent:    #7c3aed;
  --accent-bg: #7c3aed22;
  --amber:     #f59e0b;
  --green:     #22c55e;
  --red:       #ef4444;
}
:root[data-theme="light"] {
  --bg:        #f4f5fb;
  --surface:   #ffffff;
  --surface2:  #f0f1f8;
  --border:    #dde0f0;
  --text:      #1a1b2e;
  --text2:     #666;
  --text3:     #aaa;
  --shadow:    rgba(80,80,140,0.12);
  --input-bg:  #f8f9ff;
  --accent:    #7c3aed;
  --accent-bg: #7c3aed18;
  --amber:     #d97706;
  --green:     #16a34a;
  --red:       #dc2626;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  transition: background 0.3s, color 0.3s;
}
.hidden { display: none !important; }

/* ── Theme toggle ──────────────────────────────────────────────────────────── */
.theme-tog {
  position: fixed; top: 16px; right: 20px; z-index: 100;
  padding: 6px 14px; border-radius: 20px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text2); cursor: pointer; font-size: 0.8rem; font-weight: 600;
  transition: all 0.2s;
}
.theme-tog:hover { border-color: var(--accent); color: var(--accent); }

/* ── Lobby ─────────────────────────────────────────────────────────────────── */
.lobby-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 32px 20px;
}
.lobby-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 24px;
  padding: 48px 52px; width: 100%; max-width: 580px;
  box-shadow: 0 20px 60px var(--shadow);
  display: flex; flex-direction: column; gap: 28px;
  transition: background 0.3s, border-color 0.3s;
}
.lobby-header { text-align: center; }
.lobby-title  { font-size: 3rem; font-weight: 900; letter-spacing: -1px; line-height: 1; }
.lobby-title span { color: var(--accent); }
.lobby-subtitle   { font-size: 0.88rem; color: var(--text2); margin-top: 8px; }

/* ── Sections ──────────────────────────────────────────────────────────────── */
.section { display: flex; flex-direction: column; gap: 10px; }
.section-label {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1.5px;
  font-weight: 700; color: var(--text3);
}

/* ── Name input ────────────────────────────────────────────────────────────── */
.name-input {
  background: var(--input-bg); border: 2px solid var(--border); border-radius: 12px;
  padding: 13px 18px; font-size: 1rem; color: var(--text); width: 100%;
  font-family: inherit; outline: none; transition: border-color 0.2s, background 0.3s;
}
.name-input:focus { border-color: var(--accent); }

/* ── Pills ─────────────────────────────────────────────────────────────────── */
.pill-row { display: flex; gap: 8px; flex-wrap: wrap; }
.pill {
  padding: 8px 18px; border-radius: 20px; border: 2px solid var(--border);
  background: transparent; color: var(--text2); cursor: pointer;
  font-size: 0.88rem; font-weight: 600; transition: all 0.18s;
}
.pill:hover  { border-color: var(--accent); color: var(--accent); }
.pill.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.pill.active-amber { background: var(--amber); border-color: var(--amber); color: #fff; }

/* ── Topic grid ────────────────────────────────────────────────────────────── */
.topic-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.topic-tile {
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  padding: 10px 6px 9px; border-radius: 14px; border: 2px solid var(--border);
  background: transparent; cursor: pointer; color: var(--text2);
  transition: border-color 0.18s, background 0.18s, color 0.18s;
}
.topic-tile:hover  { border-color: var(--accent); color: var(--text); }
.topic-tile.active { background: var(--accent-bg); border-color: var(--accent); color: var(--text); }
.topic-icon  { font-size: 1.55rem; line-height: 1; }
.topic-name  { font-size: 0.68rem; font-weight: 700; text-align: center; line-height: 1.2; }
.topic-count {
  font-size: 0.6rem; font-weight: 600; color: var(--text3);
  opacity: 0; transition: opacity 0.18s; line-height: 1;
}
.topic-tile:hover .topic-count,
.topic-tile.active .topic-count { opacity: 1; }

/* ── Stepper ───────────────────────────────────────────────────────────────── */
.stepper {
  display: flex; align-items: center; border: 2px solid var(--border);
  border-radius: 12px; overflow: hidden; align-self: flex-start;
  transition: border-color 0.18s;
}
.stepper:focus-within { border-color: var(--accent); }
.step-btn {
  width: 38px; height: 42px; border: none; background: transparent;
  color: var(--text2); font-size: 1.2rem; font-weight: 700; cursor: pointer;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: background 0.15s, color 0.15s;
}
.step-btn:hover    { background: var(--surface2); color: var(--accent); }
.step-btn:disabled { color: var(--text3); cursor: default; }
.step-btn:disabled:hover { background: transparent; color: var(--text3); }
.step-val {
  min-width: 48px; text-align: center; font-size: 1.05rem; font-weight: 700;
  color: var(--text); border-left: 1px solid var(--border);
  border-right: 1px solid var(--border); padding: 0 4px; height: 42px; line-height: 42px;
}

/* ── Settings 2-col ────────────────────────────────────────────────────────── */
.settings2     { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.setting-col   { display: flex; flex-direction: column; gap: 8px; }
.setting-sublabel { font-size: 0.75rem; color: var(--text3); font-weight: 600; }

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn-primary {
  width: 100%; padding: 15px; border-radius: 14px; background: var(--accent);
  color: #fff; border: none; font-size: 1.05rem; font-weight: 700; cursor: pointer;
  letter-spacing: 0.3px; transition: opacity 0.15s, transform 0.1s;
}
.btn-primary:hover  { opacity: 0.9; transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  flex: 1; padding: 13px; border-radius: 14px; background: transparent;
  color: var(--text); border: 2px solid var(--border);
  font-size: 0.95rem; font-weight: 600; cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-row  { display: flex; gap: 12px; }
.btn-solo {
  width: 100%; padding: 13px; border-radius: 14px;
  background: var(--surface2); color: var(--text2); border: 2px solid var(--border);
  font-size: 0.95rem; font-weight: 600; cursor: pointer; transition: all 0.15s;
}
.btn-solo:hover { border-color: var(--accent); color: var(--accent); }

/* ── Join row ──────────────────────────────────────────────────────────────── */
.join-row { display: flex; gap: 10px; }
.code-input {
  flex: 1; background: var(--input-bg); border: 2px solid var(--border);
  border-radius: 12px; padding: 13px 18px; font-size: 1rem; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase; color: var(--text); font-family: monospace;
  outline: none; transition: border-color 0.2s;
}
.code-input:focus { border-color: var(--accent); }
.code-input::placeholder { letter-spacing: 2px; color: var(--text3); font-weight: 400; }
.btn-join {
  padding: 13px 22px; border-radius: 12px; background: var(--surface2);
  border: 2px solid var(--border); color: var(--text); font-weight: 700;
  font-size: 0.95rem; cursor: pointer; transition: all 0.15s; white-space: nowrap;
}
.btn-join:hover { border-color: var(--accent); color: var(--accent); }

/* ── Divider ───────────────────────────────────────────────────────────────── */
.divider {
  display: flex; align-items: center; gap: 12px;
  color: var(--text3); font-size: 0.75rem; font-weight: 600; letter-spacing: 1px;
}
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* ══ GAME ═══════════════════════════════════════════════════════════════════════ */
.game-layout {
  display: flex; min-height: 100vh;
}
.game-main {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  padding: 20px 24px 32px; gap: 14px; max-width: 860px; margin: 0 auto;
}

/* ── Meta line ─────────────────────────────────────────────────────────────── */
.question-meta {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  font-size: 0.82rem; font-weight: 700;
}
.meta-static { color: var(--text3); height: 1.2em; }
.meta-phase  { height: 1.2em; transition: color 0.3s; }
.meta-phase.cash   { color: var(--amber); }
.meta-phase.square { color: var(--accent); }
.meta-phase.duo    { color: var(--red); }

/* ── Timer bar ─────────────────────────────────────────────────────────────── */
.timer-bar { width: 100%; height: 5px; background: var(--border); border-radius: 3px; overflow: hidden; }
#timer-fill { height: 100%; width: 100%; border-radius: 3px; transition: background-color 0.5s; background: var(--amber); }

/* ── Illustration ──────────────────────────────────────────────────────────── */
.illustration-wrap {
  width: 100%; aspect-ratio: 16/9; border-radius: 16px; overflow: hidden;
  background: var(--surface2); border: 1px solid var(--border); position: relative;
}
#illustration { width: 100%; height: 100%; object-fit: cover; display: block; }
.illus-placeholder {
  position: absolute; inset: 0; display: flex; align-items: center;
  justify-content: center; font-size: 4rem; color: var(--text3);
}

/* ── Question text ─────────────────────────────────────────────────────────── */
.question-text {
  width: 100%; font-size: 1.35rem; font-weight: 700; text-align: center; line-height: 1.4;
}

/* ── Answer zone ───────────────────────────────────────────────────────────── */
.answer-zone { width: 100%; height: 160px; position: relative; flex-shrink: 0; }
.phase-content {
  position: absolute; inset: 0; opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease;
  display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 10px;
}
.phase-content.visible { opacity: 1; pointer-events: auto; }

/* Cash */
.cash-row { display: flex; gap: 10px; width: 100%; max-width: 520px; }
.cash-input {
  flex: 1; background: var(--input-bg); border: 2px solid var(--border);
  border-radius: 12px; padding: 14px 18px; font-size: 1.1rem; color: var(--text);
  font-family: inherit; outline: none; transition: border-color 0.2s;
}
.cash-input:focus { border-color: var(--accent); }
.btn-submit {
  padding: 14px 24px; border-radius: 12px; background: var(--accent);
  color: #fff; border: none; font-size: 1rem; font-weight: 700; cursor: pointer;
  transition: opacity 0.15s; white-space: nowrap;
}
.btn-submit:hover { opacity: 0.9; }

/* Choices (Square + Duo) */
.choices-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; width: 100%; }
.choice {
  padding: 18px 14px; border-radius: 14px; border: 2px solid var(--border);
  background: var(--surface2); color: var(--text); font-size: 0.95rem; font-weight: 600;
  cursor: pointer; text-align: center; transition: border-color 0.15s, background 0.15s;
}
.choice:hover { border-color: var(--accent); background: var(--accent-bg); }
.choice.out {
  opacity: 0.12; pointer-events: none; filter: grayscale(1);
  border-color: var(--border) !important; background: transparent !important;
  transition: opacity 0.5s, filter 0.5s;
}
.choice.selected-correct { border-color: var(--green); background: #22c55e22; }
.choice.selected-wrong   { border-color: var(--red);   background: #ef444422; }

/* Locked / Reveal */
.locked-msg { font-size: 1.1rem; font-weight: 700; color: var(--green); }
.reveal-wrap { text-align: center; }
.reveal-correct { font-size: 1.2rem; font-weight: 700; color: var(--green); }
.reveal-wrong   { font-size: 1.2rem; font-weight: 700; color: var(--red); }
.reveal-answer  { font-size: 1rem; color: var(--text2); margin-top: 6px; }
.reveal-points  { font-size: 1.5rem; font-weight: 900; color: var(--accent); margin-top: 4px; }
.vote-row { display: flex; justify-content: center; gap: 12px; margin-top: 10px; }
.vote-btn {
  background: transparent; border: 1px solid var(--border); border-radius: 10px;
  padding: 5px 12px; font-size: 1.1rem; cursor: pointer; opacity: 0.5;
  transition: opacity 0.15s, border-color 0.15s, transform 0.1s;
}
.vote-btn:hover { opacity: 1; border-color: var(--accent); transform: scale(1.1); }
.vote-btn.voted { opacity: 1; border-color: var(--accent); }
.vote-btn:disabled { cursor: default; }
.vote-btn:disabled:hover { transform: none; border-color: var(--border); }

/* ── Sidebar leaderboard ───────────────────────────────────────────────────── */
.sidebar {
  width: 220px; flex-shrink: 0; padding: 20px 16px;
  border-left: 1px solid var(--border); display: flex; flex-direction: column; gap: 12px;
}
.sidebar-title {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1.5px;
  font-weight: 700; color: var(--text3);
}
.lb-row {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px;
  border-radius: 10px; background: var(--surface2); transition: transform 0.4s ease;
}
.lb-rank  { font-size: 1rem; width: 24px; text-align: center; }
.lb-name  { flex: 1; font-size: 0.88rem; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-score { font-size: 0.88rem; font-weight: 700; color: var(--accent); }

/* ── Game over ─────────────────────────────────────────────────────────────── */
.game-over-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 32px;
}
.game-over-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 24px;
  padding: 48px 52px; width: 100%; max-width: 480px; text-align: center;
  display: flex; flex-direction: column; gap: 24px;
  box-shadow: 0 20px 60px var(--shadow);
}
.game-over-title { font-size: 2rem; font-weight: 900; }
.final-scores    { display: flex; flex-direction: column; gap: 10px; }
.final-row {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; border-radius: 12px; background: var(--surface2);
}
.final-rank  { font-size: 1.2rem; }
.final-name  { flex: 1; font-weight: 600; text-align: left; }
.final-score { font-weight: 700; color: var(--accent); }

@media (max-width: 700px) {
  .game-layout { flex-direction: column; }
  .sidebar { width: 100%; border-left: none; border-top: 1px solid var(--border); }
  .lobby-card { padding: 32px 24px; }
  .topic-grid { grid-template-columns: repeat(3,1fr); }
}