@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg-void: #150C2E;
  --bg-panel: #1F1440;
  --bg-panel-raised: #2A1B57;
  --accent-violet: #7C3AED;
  --accent-violet-bright: #9D6BFF;
  --accent-gold: #FFB627;
  --accent-teal: #2DD4BF;
  --accent-coral: #FF6B6B;
  --text-hi: #F5F3FF;
  --text-mid: #C7BEE8;
  --text-dim: #8B7FB8;
  --border-soft: rgba(157, 107, 255, 0.25);

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at 15% 0%, rgba(124, 58, 237, 0.35), transparent 45%),
    radial-gradient(circle at 100% 20%, rgba(45, 212, 191, 0.18), transparent 40%),
    var(--bg-void);
  color: var(--text-hi);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .display {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  margin: 0;
}

.wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  gap: 24px;
}

.panel {
  width: 100%;
  max-width: 480px;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: 0 20px 60px rgba(9, 4, 26, 0.55);
}

.eyebrow {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-teal);
  margin-bottom: 8px;
}

.title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-hi);
}

.subtitle {
  color: var(--text-mid);
  font-size: 15px;
  margin-top: 6px;
  line-height: 1.5;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-mid);
  margin: 18px 0 6px;
}

input[type="text"] {
  width: 100%;
  background: var(--bg-void);
  border: 1.5px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 16px;
  color: var(--text-hi);
  font-family: var(--font-body);
  outline: none;
  transition: border-color 0.15s ease;
}

input[type="text"]:focus {
  border-color: var(--accent-violet-bright);
}

input[type="text"]::placeholder { color: var(--text-dim); }

.btn {
  appearance: none;
  border: none;
  border-radius: var(--radius-sm);
  padding: 14px 22px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: transform 0.1s ease, filter 0.15s ease;
}

.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent-violet-bright), var(--accent-violet));
  color: white;
  width: 100%;
  margin-top: 22px;
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.4);
}
.btn-primary:hover:not(:disabled) { filter: brightness(1.08); }

.btn-ghost {
  background: transparent;
  border: 1.5px solid var(--border-soft);
  color: var(--text-hi);
}

.error-msg {
  color: var(--accent-coral);
  font-size: 14px;
  margin-top: 10px;
  min-height: 20px;
}

.hint {
  color: var(--text-dim);
  font-size: 13px;
  margin-top: 18px;
  text-align: center;
}

.hint a { color: var(--accent-teal); text-decoration: none; }

/* ---- Code tiles (signature element): flip-card style join code ---- */
.code-tiles {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 14px 0 6px;
}

.code-tile {
  width: 44px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-void);
  border: 1.5px solid var(--accent-violet-bright);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--accent-gold);
  box-shadow: 0 4px 0 rgba(124, 58, 237, 0.35);
}

@media (max-width: 420px) {
  .code-tile { width: 34px; height: 46px; font-size: 20px; }
}

/* ---- Lobby / host screen ---- */
.lobby-wrap {
  max-width: 920px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 760px) {
  .lobby-wrap { grid-template-columns: 340px 1fr; }
}

.qr-card {
  text-align: center;
  cursor: zoom-in;
}

.qr-card img {
  width: 100%;
  max-width: 260px;
  border-radius: var(--radius-md);
  background: white;
  padding: 12px;
}

.qr-caption {
  color: var(--text-dim);
  font-size: 13px;
  margin-top: 10px;
}

.player-count {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--accent-teal);
  font-weight: 600;
}

.player-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
  min-height: 60px;
}

.player-chip {
  background: var(--bg-panel-raised);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-hi);
  animation: pop-in 0.22s ease;
}

@keyframes pop-in {
  from { transform: scale(0.7); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.empty-note {
  color: var(--text-dim);
  font-size: 14px;
  padding: 10px 0;
}

/* ---- QR zoom modal ---- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(9, 4, 26, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  cursor: zoom-out;
  padding: 24px;
}

.modal-backdrop img {
  width: min(90vw, 90vh);
  max-width: 640px;
  background: white;
  border-radius: 16px;
  padding: 20px;
}

.hidden { display: none !important; }

.waiting-pulse {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-teal);
  display: inline-block;
  margin-right: 8px;
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; transform: scale(0.85); }
  50% { opacity: 1; transform: scale(1.1); }
}

/* ---- Question editor ---- */
.editor-shell {
  width: 100%;
  max-width: 1080px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.editor-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.editor-topbar .btn { width: auto; margin-top: 0; }

.editor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 860px) {
  .editor-grid { grid-template-columns: 300px 1fr; align-items: start; }
}

.q-list {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.q-list-item {
  background: var(--bg-panel-raised);
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.q-list-item.active { border-color: var(--accent-violet-bright); }

.q-list-item .q-type {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-teal);
}

.q-list-item .q-title {
  font-size: 14px;
  color: var(--text-hi);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.q-list-item .q-row-actions {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

.q-mini-btn {
  background: transparent;
  border: 1px solid var(--border-soft);
  color: var(--text-mid);
  border-radius: 6px;
  font-size: 12px;
  padding: 3px 8px;
  cursor: pointer;
}
.q-mini-btn:hover { color: var(--text-hi); border-color: var(--accent-violet-bright); }

.q-editor-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.type-picker {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.type-chip {
  background: var(--bg-panel-raised);
  border: 1.5px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-hi);
}
.type-chip:hover { border-color: var(--accent-violet-bright); }

textarea {
  width: 100%;
  background: var(--bg-void);
  border: 1.5px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 15px;
  color: var(--text-hi);
  font-family: var(--font-body);
  outline: none;
  resize: vertical;
  min-height: 70px;
}
textarea:focus { border-color: var(--accent-violet-bright); }

.field-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.field-row > div { flex: 1; min-width: 140px; }

.char-count {
  font-size: 12px;
  color: var(--text-dim);
  text-align: right;
  margin-top: 4px;
}
.char-count.over { color: var(--accent-coral); }

.option-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.option-row input[type="text"] { flex: 1; }
.option-row input[type="radio"], .option-row input[type="checkbox"] {
  width: 20px; height: 20px; accent-color: var(--accent-violet-bright);
}

.pair-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  margin-bottom: 8px;
  align-items: center;
}

.preview-box {
  background: var(--bg-void);
  border: 1px dashed var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-top: 8px;
  color: var(--text-mid);
  font-size: 14px;
  min-height: 24px;
}

.img-preview {
  max-width: 100%;
  max-height: 220px;
  border-radius: var(--radius-sm);
  margin-top: 10px;
  display: block;
}

.chip-select {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.chip-select button {
  background: var(--bg-panel-raised);
  border: 1.5px solid var(--border-soft);
  color: var(--text-mid);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  font-family: var(--font-body);
}
.chip-select button.selected {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  font-weight: 700;
}

.save-status {
  font-size: 13px;
  color: var(--text-dim);
}
.save-status.ok { color: var(--accent-teal); }
.save-status.err { color: var(--accent-coral); }

.empty-editor {
  color: var(--text-dim);
  text-align: center;
  padding: 60px 20px;
}

/* ---- Live play (host big screen + player screen) ---- */
.play-shell {
  width: 100%;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: center;
}

.timer-ring-wrap {
  position: relative;
  width: 88px;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timer-ring-wrap svg { transform: rotate(-90deg); }
.timer-ring-bg { fill: none; stroke: var(--bg-panel-raised); stroke-width: 8; }
.timer-ring-fg { fill: none; stroke: var(--accent-gold); stroke-width: 8; stroke-linecap: round; transition: stroke-dashoffset 0.2s linear; }
.timer-ring-num { position: absolute; font-family: var(--font-display); font-weight: 700; font-size: 22px; }

.q-stage {
  width: 100%;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
}

.q-stage-title {
  font-size: clamp(20px, 3.4vw, 30px);
  font-weight: 700;
  font-family: var(--font-display);
  line-height: 1.3;
}

.q-stage-desc {
  color: var(--text-mid);
  margin-top: 10px;
  font-size: 16px;
}

.q-stage img.q-image {
  max-width: 100%;
  max-height: 320px;
  border-radius: var(--radius-md);
  margin-top: 16px;
  object-fit: contain;
}

.progress-pill {
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.answer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  width: 100%;
  margin-top: 10px;
}
@media (max-width: 560px) { .answer-grid { grid-template-columns: 1fr; } }

.answer-btn {
  border: none;
  border-radius: var(--radius-md);
  padding: 20px 16px;
  font-size: 17px;
  font-weight: 700;
  color: white;
  cursor: pointer;
  text-align: left;
  transition: transform 0.1s ease, filter 0.15s ease;
  font-family: var(--font-body);
}
.answer-btn:active { transform: scale(0.97); }
.answer-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.answer-btn.correct-answer { outline: 3px solid white; }
.answer-btn.wrong-answer { opacity: 0.4; }

.answer-c0 { background: #FF6B6B; }
.answer-c1 { background: #FFB627; }
.answer-c2 { background: #2DD4BF; }
.answer-c3 { background: #9D6BFF; }
.answer-c4 { background: #5AC8FA; }
.answer-c5 { background: #A8E063; }

.waiting-screen {
  text-align: center;
  padding: 40px 20px;
}

.big-emoji { font-size: 52px; }

.dist-bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 10px 0;
  text-align: left;
}
.dist-bar-label { width: 140px; flex-shrink: 0; font-size: 14px; color: var(--text-mid); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dist-bar-track { flex: 1; background: var(--bg-void); border-radius: 999px; height: 22px; overflow: hidden; }
.dist-bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent-violet), var(--accent-violet-bright)); border-radius: 999px; display: flex; align-items: center; justify-content: flex-end; padding-right: 8px; color: white; font-size: 12px; font-weight: 700; min-width: 24px; transition: width 0.4s ease; }
.dist-bar-fill.is-correct { background: linear-gradient(90deg, #1CA88A, var(--accent-teal)); }

.leader-row {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-panel-raised);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 8px;
}
.leader-rank {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--accent-gold);
  width: 28px;
}
.leader-name { flex: 1; font-weight: 600; }
.leader-score { font-family: var(--font-display); font-weight: 700; color: var(--accent-teal); }

.match-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
  text-align: left;
}
.match-row select {
  width: 100%;
  background: var(--bg-void);
  border: 1.5px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 10px;
  color: var(--text-hi);
  font-family: var(--font-body);
}

.report-q-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
  text-align: left;
}

.detail-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  font-size: 13px;
}
.detail-table th, .detail-table td {
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-mid);
}
.detail-table th { color: var(--text-dim); font-weight: 600; font-size: 12px; text-transform: uppercase; }

/* ---- Report detail modal ---- */
.modal-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 760px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  text-align: left;
  cursor: default;
}

.modal-close {
  position: sticky;
  top: 0;
  float: right;
  background: var(--bg-panel-raised);
  border: 1px solid var(--border-soft);
  color: var(--text-hi);
  border-radius: 999px;
  width: 34px;
  height: 34px;
  font-size: 18px;
  cursor: pointer;
  z-index: 2;
}

.modal-q-title {
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  clear: both;
  margin-top: 4px;
}

.modal-q-image {
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  border-radius: var(--radius-md);
  margin-top: 14px;
  background: var(--bg-void);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin: 18px 0;
}

.stat-tile {
  background: var(--bg-panel-raised);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
}

.stat-tile .stat-num {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--accent-gold);
}

.stat-tile .stat-label {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 2px;
}

.q-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.q-card-mini {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 16px;
  cursor: pointer;
  text-align: left;
  transition: border-color 0.15s ease, transform 0.1s ease;
}
.q-card-mini:hover { border-color: var(--accent-violet-bright); transform: translateY(-2px); }

.q-card-mini img {
  width: 100%;
  height: 100px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-top: 8px;
}