/* 赛博抢椅子 */
:root {
  --chair-accent: #7c5cff;
  --chair-safe: #3dd68c;
  --chair-danger: #ff6b6b;
  --chair-warn: #ffb347;
  --chair-bg: #12121a;
  --chair-panel: #1a1a26;
  --chair-border: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100vh;
  background: var(--chair-bg);
  color: #e8e8f0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

body {
  background:
    radial-gradient(circle at 20% 0%, rgba(124, 92, 255, 0.12), transparent 40%),
    var(--chair-bg);
}

.page {
  min-height: calc(100dvh - var(--site-nav-height, 0px));
  max-width: 1080px;
  margin: 0 auto;
  padding: 1rem 1rem 2rem;
}

.subtitle {
  margin: 0.25rem 0 0;
  font-size: 0.8rem;
  color: #888;
}

.panel-title {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.header-compact {
  margin-bottom: 1rem;
}

.title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(90deg, #a78bfa, #7c5cff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.screen[hidden] {
  display: none !important;
}

#entryScreen {
  display: flex;
  justify-content: center;
  padding-top: 0.5rem;
}

.entry-panel {
  width: 100%;
  max-width: 420px;
}

.panel {
  background: var(--chair-panel);
  border: 1px solid var(--chair-border);
  border-radius: 12px;
  padding: 1.25rem;
}

.lobby-panel h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.hint {
  color: #9a9ab0;
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0 0 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.field span {
  font-size: 0.8rem;
  color: #b0b0c8;
}

.field input,
.field select {
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--chair-border);
  background: #0e0e16;
  color: #fff;
  font-size: 1rem;
}

.field.block {
  display: flex;
}

.join-row {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
  margin-top: 0.5rem;
}

.join-row .field {
  flex: 1;
  margin-bottom: 0;
}

.primary-button,
.secondary-button {
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: none;
  font-size: 0.95rem;
  cursor: pointer;
  font-weight: 600;
}

.primary-button {
  background: var(--chair-accent);
  color: #fff;
  width: 100%;
  margin-bottom: 0.75rem;
}

.secondary-button {
  background: rgba(255, 255, 255, 0.08);
  color: #e0e0f0;
}

.join-btn {
  white-space: nowrap;
  min-width: 4.5rem;
}

.field-feedback {
  font-size: 0.85rem;
  margin: 0.5rem 0 0;
}

.field-feedback.is-wrong {
  color: var(--chair-danger);
}

.field-feedback.is-ok {
  color: var(--chair-safe);
}

.room-topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 1rem;
}

.stat-pill {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.8rem;
  color: #c8c8dc;
}

.stat-room-code {
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
}

.copy-room-btn {
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--chair-border);
  background: transparent;
  color: #aaa;
  cursor: pointer;
}

.game-layout {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .game-layout {
    grid-template-columns: 1fr 280px;
  }
}

.question-card {
  text-align: center;
  padding: 1.5rem 1rem;
}

.question-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--chair-accent);
  margin-bottom: 0.5rem;
}

.question-text {
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 0.75rem;
}

.timer-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 0.35rem;
}

.timer-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--chair-accent), #a78bfa);
  transition: width 0.3s linear;
}

.timer-text {
  font-size: 0.8rem;
  color: #888;
}

.chair-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  gap: 0.65rem;
  margin: 1rem 0;
}

.chair-btn {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 12px;
  border: 2px solid var(--chair-border);
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  padding: 0.25rem;
}

.chair-btn small {
  font-size: 0.6rem;
  font-weight: 400;
  color: #888;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chair-btn:hover:not(:disabled) {
  border-color: var(--chair-accent);
  transform: translateY(-2px);
}

.chair-btn.is-selected {
  border-color: var(--chair-accent);
  background: rgba(124, 92, 255, 0.2);
  box-shadow: 0 0 0 2px rgba(124, 92, 255, 0.3);
}

.chair-btn.is-taken {
  border-color: var(--chair-danger);
  background: rgba(255, 107, 107, 0.12);
  cursor: not-allowed;
  opacity: 0.85;
}

.chair-btn.is-mine-safe {
  border-color: var(--chair-safe);
  background: rgba(61, 214, 140, 0.15);
}

.chair-btn:disabled {
  cursor: default;
}

.claim-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.claim-form input {
  flex: 1;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--chair-border);
  background: #0e0e16;
  color: #fff;
  font-size: 1rem;
}

.claim-form button {
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  border: none;
  background: var(--chair-accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.claim-form button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.step-label {
  font-size: 0.8rem;
  color: #9a9ab0;
  margin: 0.75rem 0 0.35rem;
  text-align: left;
}

.question-panel {
  margin-top: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--chair-border);
}

.option-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: 0.75rem;
  align-items: stretch;
}

@media (min-width: 520px) {
  .option-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.option-btn {
  width: 100%;
  min-height: 3.25rem;
  padding: 0.75rem 0.5rem;
  border-radius: 10px;
  border: 2px solid var(--chair-border);
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.35;
}

.option-btn:hover:not(:disabled) {
  border-color: var(--chair-accent);
  background: rgba(124, 92, 255, 0.15);
}

.option-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.classic-actions {
  margin-top: 1rem;
}

.claim-btn {
  width: 100%;
  margin-bottom: 0;
}

.status-hint {
  text-align: center;
  padding: 0.75rem;
  margin-top: 0.75rem;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  color: #aaa;
  font-size: 0.9rem;
}

.submitted-banner {
  text-align: center;
  padding: 1rem;
  border-radius: 10px;
  background: rgba(61, 214, 140, 0.1);
  border: 1px solid rgba(61, 214, 140, 0.3);
  color: var(--chair-safe);
  font-weight: 600;
}

.reveal-panel {
  margin-top: 1rem;
}

.reveal-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.reveal-list li {
  padding: 0.45rem 0.65rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.9rem;
}

.reveal-list .status-seated {
  color: var(--chair-safe);
}

.reveal-list .status-wrong,
.reveal-list .status-slow,
.reveal-list .status-timeout {
  color: var(--chair-danger);
}

.sidebar-panel h2 {
  font-size: 0.95rem;
  margin: 0 0 0.75rem;
}

.player-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.player-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--chair-border);
  font-size: 0.9rem;
}

.player-list li.is-out {
  opacity: 0.45;
  text-decoration: line-through;
}

.player-list li.is-me {
  color: var(--chair-accent);
  font-weight: 600;
}

.player-badge {
  font-size: 0.7rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
}

.log-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
  max-height: 160px;
  overflow-y: auto;
  font-size: 0.78rem;
  color: #888;
}

.log-list li {
  padding: 0.2rem 0;
}

.owner-settings {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--chair-border);
}

.owner-settings summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: #aaa;
  margin-bottom: 0.5rem;
}

.game-over-card {
  text-align: center;
  padding: 2rem 1rem;
}

.game-over-card h2 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
  color: var(--chair-safe);
}

.help-inline {
  font-size: 0.8rem;
  color: #777;
  margin-top: 1rem;
  line-height: 1.6;
}

.action-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  background: rgba(30, 30, 40, 0.95);
  border: 1px solid var(--chair-border);
  color: #fff;
  font-size: 0.85rem;
  z-index: 100;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.lobby-start-row {
  margin-top: 0.75rem;
}

.kick-btn {
  padding: 0.15rem 0.4rem;
  font-size: 0.7rem;
  border: none;
  background: rgba(255, 107, 107, 0.2);
  color: var(--chair-danger);
  border-radius: 4px;
  cursor: pointer;
}

/* ── 联机大厅（参考盲排布局） ── */
.room-topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.room-topbar-main {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.stat-room-code {
  cursor: pointer;
}

.stat-mode {
  color: #a78bfa;
}

.help-toggle-btn {
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 180, 67, 0.45);
  background: rgba(255, 180, 67, 0.1);
  color: #fde68a;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
}

.help-panel {
  margin: -0.25rem 0 1rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 180, 67, 0.25);
  background: rgba(15, 13, 20, 0.95);
  max-height: min(320px, 45vh);
  overflow-y: auto;
}

.help-panel[hidden] {
  display: none !important;
}

.help-panel-inner {
  padding: 0.85rem 1rem;
}

.help-title {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  color: #fde68a;
}

.help-list {
  margin: 0 0 0.75rem;
  padding-left: 1.1rem;
  font-size: 0.8rem;
  line-height: 1.55;
  color: #bbb;
}

.help-close-btn {
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
}

.room-layout {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .room-layout {
    grid-template-columns: 1fr 260px;
  }
}

.room-sidebar .panel-title {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.muted {
  color: #666;
  font-weight: 400;
  font-size: 0.85rem;
}

.log-title {
  margin: 1rem 0 0.35rem;
  font-size: 0.75rem;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.lobby-area .settings-block {
  margin: 1rem 0;
  padding-top: 1rem;
  border-top: 1px solid var(--chair-border);
}

.settings-label {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.mode-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.mode-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.75rem;
  border-radius: 10px;
  border: 2px solid var(--chair-border);
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.mode-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.mode-card:has(input:checked) {
  border-color: var(--chair-accent);
  background: rgba(124, 92, 255, 0.12);
}

.mode-card-title {
  font-size: 0.9rem;
  font-weight: 700;
}

.mode-card-desc {
  font-size: 0.72rem;
  color: #888;
}

.settings-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.quiz-preview {
  margin-top: 1rem;
  padding: 0.85rem;
  border-radius: 10px;
  border: 1px dashed rgba(124, 92, 255, 0.35);
  background: rgba(124, 92, 255, 0.06);
}

.quiz-preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.btn-sm {
  padding: 0.3rem 0.6rem;
  font-size: 0.72rem;
}

.preview-q-text {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
}

.preview-options {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
}

.preview-options li {
  padding: 0.45rem 0.55rem;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.25);
  font-size: 0.8rem;
  border: 1px solid var(--chair-border);
}

.preview-options li.is-answer {
  border-color: var(--chair-safe);
  color: var(--chair-safe);
}

.preview-hint {
  margin: 0.5rem 0 0;
  font-size: 0.72rem;
  color: #666;
}

.lobby-actions {
  margin-top: 1rem;
}

.start-btn {
  width: 100%;
  margin-bottom: 0;
}

.lobby-wait-hint {
  text-align: center;
  margin: 0;
}

.play-panel {
  padding: 1.25rem;
}

.play-top {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.waiting-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem;
  margin-bottom: 0.75rem;
  border-radius: 12px;
  background: rgba(255, 180, 67, 0.12);
  border: 1px solid rgba(255, 180, 67, 0.35);
  color: #fde68a;
  font-size: 1.1rem;
  font-weight: 700;
}

.waiting-icon {
  font-size: 1.4rem;
}

.chair-btn .chair-icon {
  width: 36px;
  height: 36px;
  background: center / contain no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Cpath fill='%23a78bfa' d='M14 28c0-8 6-14 18-14s18 6 18 14v6H14v-6zm-4 8h52v8c0 3-2 5-5 5H15c-3 0-5-2-5-5v-8zm8 13h8v9H18v-9zm20 0h8v9H38v-9z'/%3E%3C/svg%3E");
}

.chair-btn.is-taken .chair-icon,
.chair-btn:disabled:not(.is-selected) .chair-icon {
  filter: grayscale(0.8) opacity(0.5);
}

.chair-btn.is-mine-safe .chair-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Cpath fill='%233dd68c' d='M14 28c0-8 6-14 18-14s18 6 18 14v6H14v-6zm-4 8h52v8c0 3-2 5-5 5H15c-3 0-5-2-5-5v-8zm8 13h8v9H18v-9zm20 0h8v9H38v-9z'/%3E%3C/svg%3E");
}

.option-btn.is-selected {
  border-color: var(--chair-accent);
  background: rgba(124, 92, 255, 0.25);
}

.confirm-multi-btn {
  width: 100%;
  margin-top: 0.75rem;
}

.typing-panel {
  margin-top: 0.5rem;
}

.typing-label {
  font-size: 0.75rem;
  color: #888;
  text-align: center;
  margin: 0 0 0.35rem;
}

.typing-prompt {
  font-family: ui-monospace, monospace;
  font-size: 1.4rem;
  letter-spacing: 0.15em;
  text-align: center;
  padding: 0.75rem;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  margin: 0 0 0.75rem;
  color: #fde68a;
}

.typing-form {
  display: flex;
  gap: 0.5rem;
}

.typing-form input {
  flex: 1;
  padding: 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--chair-border);
  background: #0e0e16;
  color: #fff;
  font-family: ui-monospace, monospace;
}

.settings-row-3 {
  grid-template-columns: 1fr 1fr 1fr;
}

@media (max-width: 640px) {
  .settings-row-3 {
    grid-template-columns: 1fr;
  }
}

.preview-type {
  font-size: 0.72rem;
  color: #888;
  margin: 0 0 0.35rem;
}

.game-over-actions {
  margin-top: 1rem;
}

.game-over-actions .primary-button {
  width: 100%;
  margin-bottom: 0.5rem;
}