/* css/style.css — 动物棋 · 云海棋局
   清新浅蓝主题：天空蓝 / 白 / 浅灰，玻璃拟态 + 云雾氛围
   视觉锚点：3D 翻牌、平滑移动、方向提示、回合脉冲
*/

:root {
  --sky: #7EC8E3;
  --sky-deep: #3B7EA1;
  --sky-soft: #BFE3F2;
  --sky-mist: #E8F4FA;
  --white: #FFFFFF;
  --gray-50: #F5F8FB;
  --gray-100: #E8EEF3;
  --gray-300: #C9D6E0;
  --gray-500: #6B7E8E;
  --ink: #2A3B4A;
  --ink-soft: #4A5C6C;
  --red: #E8654F;
  --red-deep: #C84631;
  --red-soft: #FCE6E1;
  --blue: #4F8FE8;
  --blue-deep: #2E6BC8;
  --blue-soft: #E1ECFB;
  --green: #4FB98A;
  --green-soft: #DDF1E7;
  --shadow-sm: 0 2px 8px rgba(59, 126, 161, 0.08);
  --shadow-md: 0 8px 28px rgba(59, 126, 161, 0.14);
  --shadow-lg: 0 18px 50px rgba(59, 126, 161, 0.20);
  --radius: 14px;
  --radius-lg: 22px;
  --serif: 'Noto Serif SC', 'Songti SC', serif;
  --sans: 'Noto Sans SC', system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: var(--sans);
  color: var(--ink);
  background: linear-gradient(160deg, #D7ECF7 0%, #EAF4FA 40%, #F5FAFC 100%);
  overflow: hidden;
}

body { position: relative; }

.hidden { display: none !important; }

/* ---------- 背景云海 ---------- */
.bg-layer {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
}
.cloud {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.9), rgba(255,255,255,0) 70%);
  filter: blur(8px);
  opacity: 0.7;
}
.cloud-1 { width: 420px; height: 200px; top: 8%;  left: -80px; animation: drift 38s linear infinite; }
.cloud-2 { width: 320px; height: 160px; top: 60%; left: -120px; animation: drift 52s linear infinite; opacity: 0.5; }
.cloud-3 { width: 480px; height: 220px; top: 30%; right: -160px; animation: drift-r 46s linear infinite; opacity: 0.55; }
.cloud-4 { width: 260px; height: 140px; top: 78%; right: -80px; animation: drift-r 60s linear infinite; opacity: 0.45; }
.orb {
  position: absolute; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.9), rgba(126,200,227,0.2));
  animation: breathe 6s ease-in-out infinite;
}
.orb-1 { width: 14px; height: 14px; top: 22%; left: 18%; }
.orb-2 { width: 10px; height: 10px; top: 70%; left: 78%; animation-delay: -2s; }

@keyframes drift {
  from { transform: translateX(0); }
  to   { transform: translateX(calc(100vw + 240px)); }
}
@keyframes drift-r {
  from { transform: translateX(0); }
  to   { transform: translateX(calc(-100vw - 240px)); }
}
@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50%      { transform: scale(1.6); opacity: 0.3; }
}

/* ---------- 屏幕容器 ---------- */
.screen {
  position: relative; z-index: 1;
  display: none;
  height: 100vh;
  width: 100%;
}
.screen.active { display: flex; }

/* ---------- 开始界面 ---------- */
#start-screen { align-items: center; justify-content: center; padding: 24px; }
.start-inner {
  width: 100%; max-width: 760px;
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 48px 44px 40px;
  text-align: center;
}
.brand { margin-bottom: 36px; }
.kicker {
  font-size: 13px; letter-spacing: 6px; color: var(--sky-deep);
  text-transform: uppercase; font-weight: 500; margin-bottom: 10px;
}
.title {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(54px, 9vw, 84px); line-height: 1;
  background: linear-gradient(135deg, var(--sky-deep) 0%, var(--sky) 60%, var(--blue) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 8px;
  margin-bottom: 14px;
}
.subtitle { font-size: 15px; color: var(--ink-soft); letter-spacing: 2px; }

.diff-section { margin-bottom: 32px; }
.section-label {
  font-size: 13px; color: var(--gray-500); letter-spacing: 4px;
  margin-bottom: 16px; font-weight: 500;
}
.diff-cards {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.diff-card {
  font-family: var(--sans);
  background: rgba(255,255,255,0.6);
  border: 2px solid rgba(255,255,255,0.8);
  border-radius: var(--radius);
  padding: 22px 14px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(.4,.1,.3,1);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  color: var(--ink);
}
.diff-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background: rgba(255,255,255,0.85);
}
.diff-card.active {
  border-color: var(--sky-deep);
  background: rgba(255,255,255,0.95);
  box-shadow: 0 0 0 4px rgba(126,200,227,0.25), var(--shadow-md);
}
.diff-icon { font-size: 26px; color: var(--sky-deep); line-height: 1; }
.diff-name { font-family: var(--serif); font-size: 22px; font-weight: 700; }
.diff-desc { font-size: 12px; color: var(--ink-soft); line-height: 1.6; }

.start-actions {
  display: flex; gap: 14px; justify-content: center; margin-bottom: 22px;
}
.primary-btn {
  font-family: var(--sans); font-size: 16px; font-weight: 700;
  padding: 14px 42px; border: none; cursor: pointer;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--sky-deep), var(--blue-deep));
  color: #fff;
  box-shadow: 0 8px 20px rgba(46,107,200,0.35);
  transition: transform 0.15s, box-shadow 0.2s;
  letter-spacing: 2px;
}
.primary-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(46,107,200,0.45); }
.primary-btn:active { transform: translateY(0); }
.ghost-btn {
  font-family: var(--sans); font-size: 15px; font-weight: 500;
  padding: 14px 32px; cursor: pointer;
  border-radius: 999px;
  background: rgba(255,255,255,0.7);
  border: 1.5px solid var(--sky);
  color: var(--sky-deep);
  transition: all 0.2s;
  letter-spacing: 2px;
}
.ghost-btn:hover { background: #fff; border-color: var(--sky-deep); }

.fair-note {
  font-size: 12px; color: var(--gray-500); letter-spacing: 1px;
  padding-top: 14px; border-top: 1px solid rgba(126,200,227,0.3);
}

/* ---------- 对战界面 ---------- */
#game-screen { flex-direction: column; }

.game-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(126,200,227,0.3);
  gap: 18px;
}
.header-left, .header-right { display: flex; align-items: center; gap: 16px; }
.header-center { display: flex; gap: 28px; }
.icon-btn {
  font-family: var(--sans); font-size: 13px;
  background: rgba(255,255,255,0.6); border: 1px solid var(--gray-300);
  color: var(--ink-soft); padding: 7px 14px; border-radius: 999px; cursor: pointer;
  transition: all 0.2s;
}
.icon-btn:hover { background: #fff; color: var(--ink); }

.turn-indicator { font-size: 16px; font-weight: 500; min-width: 200px; }
.turn-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px; font-weight: 500;
  background: rgba(255,255,255,0.7); border: 1px solid var(--gray-300);
}
.turn-tag.red { background: var(--red-soft); border-color: var(--red); color: var(--red-deep); animation: pulse 1.8s ease-in-out infinite; }
.turn-tag.blue { background: var(--blue-soft); border-color: var(--blue); color: var(--blue-deep); animation: pulse 1.8s ease-in-out infinite; }
.turn-tag.first { background: var(--sky-mist); border-color: var(--sky); color: var(--sky-deep); }
.turn-tag.end { background: var(--gray-100); color: var(--ink-soft); }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(126,200,227,0.5); }
  50%      { box-shadow: 0 0 0 8px rgba(126,200,227,0); }
}

.bonus-block { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.bonus-label { font-size: 11px; color: var(--gray-500); letter-spacing: 2px; }
.bonus-stars { font-size: 18px; color: var(--sky-deep); letter-spacing: 3px; font-weight: 700; }

.player-faction { font-size: 14px; }
.faction-tag {
  display: inline-block; padding: 3px 12px; border-radius: 999px;
  font-weight: 700; font-size: 13px; margin-left: 4px;
}
.faction-tag.red { background: var(--red-soft); color: var(--red-deep); border: 1px solid var(--red); }
.faction-tag.blue { background: var(--blue-soft); color: var(--blue-deep); border: 1px solid var(--blue); }

.diff-tag { font-size: 12px; color: var(--gray-500); padding: 5px 12px; background: rgba(255,255,255,0.6); border-radius: 999px; border: 1px solid var(--gray-300); }
.warn-btn {
  font-family: var(--sans); font-size: 13px; font-weight: 500;
  background: rgba(232,101,79,0.1); border: 1px solid var(--red);
  color: var(--red-deep); padding: 7px 16px; border-radius: 999px; cursor: pointer;
  transition: all 0.2s;
}
.warn-btn:hover { background: var(--red); color: #fff; }
.warn-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------- 对战主体三栏 ---------- */
.game-body {
  flex: 1; display: grid;
  grid-template-columns: 230px 1fr 280px;
  gap: 18px; padding: 18px 28px 22px;
  overflow: hidden;
  min-height: 0;
}

.side-panel { display: flex; flex-direction: column; gap: 14px; min-height: 0; }
.panel-card {
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
}
.panel-title {
  font-family: var(--serif); font-size: 15px; font-weight: 700;
  color: var(--sky-deep); margin-bottom: 12px;
  padding-bottom: 8px; border-bottom: 1px solid rgba(126,200,227,0.3);
  letter-spacing: 2px;
}

.action-buttons { display: flex; flex-direction: column; gap: 10px; }
.action-btn {
  font-family: var(--sans); font-size: 14px; font-weight: 500;
  padding: 11px 16px; border-radius: 999px; cursor: pointer;
  background: rgba(255,255,255,0.8); border: 1.5px solid var(--sky);
  color: var(--sky-deep); transition: all 0.2s;
}
.action-btn:hover:not(:disabled) { background: var(--sky); color: #fff; }
.action-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.tip { font-size: 12px; color: var(--gray-500); line-height: 1.6; margin-top: 12px; }

.legend-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px;
  font-size: 13px; color: var(--ink-soft); margin-bottom: 10px;
}
.legend-grid span { padding: 4px 8px; background: rgba(126,200,227,0.1); border-radius: 6px; text-align: center; }
.legend-note { font-size: 11px; color: var(--gray-500); line-height: 1.5; }

.log-card { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.log {
  flex: 1; overflow-y: auto; padding-right: 4px;
  display: flex; flex-direction: column; gap: 6px;
  font-size: 12.5px; line-height: 1.5;
}
.log::-webkit-scrollbar { width: 6px; }
.log::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
.log-item {
  padding: 7px 10px; border-radius: 8px;
  background: rgba(255,255,255,0.5);
  color: var(--ink-soft);
  border-left: 3px solid var(--gray-300);
}
.log-item.flip   { border-left-color: var(--sky); }
.log-item.move   { border-left-color: var(--gray-500); }
.log-item.battle { border-left-color: var(--red); color: var(--ink); font-weight: 500; }
.log-item.bonus  { border-left-color: var(--green); color: var(--green); font-weight: 500; background: var(--green-soft); }
.log-item.meta   { border-left-color: var(--sky-deep); color: var(--sky-deep); font-style: italic; }

/* ---------- 棋盘 ---------- */
.board-wrap {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  position: relative; min-height: 0;
}
/* 「对手行动中」半透明遮罩（联机模式） */
.opponent-overlay {
  position: absolute; inset: 0;
  display: none;
  align-items: center; justify-content: center;
  z-index: 15;
  pointer-events: none;
  background: rgba(42, 59, 74, 0.18);
  backdrop-filter: blur(1px);
  -webkit-backdrop-filter: blur(1px);
}
.opponent-overlay.show { display: flex; }
.opponent-overlay::before {
  content: '对手行动中';
  font-family: var(--serif);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  letter-spacing: 8px;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 2px 12px rgba(42, 59, 74, 0.55);
  opacity: 0.85;
  animation: overlayPulse 1.8s ease-in-out infinite;
}
@keyframes overlayPulse {
  0%, 100% { opacity: 0.65; transform: scale(1); }
  50%      { opacity: 0.95; transform: scale(1.03); }
}
/* 横幅为绝对浮层，不挤占棋盘布局 */
#tip-banner.tip-banner,
#bonus-banner.bonus-banner {
  position: absolute;
  left: 50%; transform: translate(-50%, -8px);
  z-index: 20;
  max-width: 92%;
}
#tip-banner.tip-banner { top: -6px; }
#bonus-banner.bonus-banner { bottom: -6px; transform: translate(-50%, 8px); }
#tip-banner.tip-banner.show { transform: translate(-50%, 0); }
#bonus-banner.bonus-banner.show { transform: translate(-50%, 0); }

/* AI 趣味消息条：右下角气泡 */
#ai-speech.ai-speech {
  position: absolute;
  right: 8px;
  bottom: 8px;
  z-index: 18;
  max-width: 78%;
  padding: 8px 14px;
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, var(--sky-mist) 100%);
  border: 1.5px solid var(--sky);
  border-radius: 14px 14px 4px 14px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3px;
  line-height: 1.4;
  box-shadow: 0 4px 14px rgba(59,126,161,0.18);
  opacity: 0;
  transform: translateY(8px) scale(0.92);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  white-space: normal;
  text-align: left;
}
#ai-speech.ai-speech.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.board {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 10px;
  width: min(100%, 560px);
  aspect-ratio: 5 / 4;
  padding: 18px;
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.cell {
  position: relative;
  background: rgba(191,227,242,0.35);
  border: 1.5px solid rgba(126,200,227,0.3);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  perspective: 800px;
  cursor: default;
  transition: background 0.2s, border-color 0.2s;
}
.cell.flippable { cursor: pointer; }
.cell.flippable:hover { background: rgba(126,200,227,0.35); border-color: var(--sky); }
.cell.selected { background: rgba(126,200,227,0.4); border-color: var(--sky-deep); box-shadow: inset 0 0 0 2px var(--sky-deep); }
.cell.selecting { box-shadow: inset 0 0 0 2px var(--sky-deep); }
.cell.movable  { background: rgba(79,185,138,0.18); border-color: var(--green); cursor: pointer; }
.cell.attackable { background: rgba(232,101,79,0.22); border-color: var(--red); cursor: pointer; animation: targetPulse 1.2s ease-in-out infinite; }
.cell.blocked {
  background: repeating-linear-gradient(45deg, rgba(107,126,142,0.28) 0 6px, rgba(107,126,142,0.12) 6px 12px);
  border-color: var(--gray-400);
  position: relative;
}
.cell.blocked::after {
  content: '✕';
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 700;
  color: rgba(107,126,142,0.85);
  pointer-events: none;
}
/* 未翻开牌：未知，显示「?」（区别于真正不可吃的「×」） */
.cell.unknown {
  background: repeating-linear-gradient(45deg, rgba(126,200,227,0.22) 0 6px, rgba(126,200,227,0.10) 6px 12px);
  border-color: var(--sky);
  position: relative;
}
.cell.unknown::after {
  content: '?';
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 700;
  color: rgba(59,126,161,0.7);
  pointer-events: none;
  text-shadow: 0 1px 2px rgba(255,255,255,0.6);
}
@keyframes targetPulse {
  0%,100% { box-shadow: inset 0 0 0 2px var(--red); }
  50%     { box-shadow: inset 0 0 0 3px var(--red); }
}

/* 方向提示箭头 */
.hint { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; pointer-events: none; }
.hint .arrow {
  font-size: 22px; font-weight: 700; opacity: 0.85;
  text-shadow: 0 1px 3px rgba(0,0,0,0.25);
}
.hint.movable .arrow  { color: var(--green); }
.hint.attackable .arrow { color: var(--red); }
.hint.blocked .arrow   { display: none; }

/* ---------- 棋子卡牌（3D 翻转）---------- */
.card {
  width: 86%; height: 86%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(.4,.1,.3,1);
  cursor: default;
}
.card.gone { display: none; }
.card.revealed { transform: rotateY(180deg); }

.face {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  border-radius: 10px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  box-shadow: 0 4px 12px rgba(59,126,161,0.18);
}
.face.back {
  background: linear-gradient(135deg, var(--sky) 0%, var(--sky-deep) 100%);
  color: rgba(255,255,255,0.9);
  font-size: 36px;
}
.face.back .cloud-mark {
  text-shadow: 0 1px 4px rgba(0,0,0,0.25);
  opacity: 0.9;
  filter: drop-shadow(0 0 6px rgba(255,255,255,0.4));
}
.face.front {
  transform: rotateY(180deg);
  background: #fff;
  border: 2px solid var(--gray-300);
}
.card.red .face.front { background: linear-gradient(160deg, #fff 0%, var(--red-soft) 100%); border-color: var(--red); }
.card.blue .face.front { background: linear-gradient(160deg, #fff 0%, var(--blue-soft) 100%); border-color: var(--blue); }

.animal {
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
  font-size: clamp(30px, 6vw, 44px);
  line-height: 1;
  filter: drop-shadow(0 2px 3px rgba(0,0,0,0.18));
}
.card.red .animal,
.card.blue .animal { color: inherit; }
.lvl {
  position: absolute; top: 4px; right: 6px;
  font-size: 10px; font-weight: 700; color: var(--gray-500);
  background: rgba(255,255,255,0.7); border-radius: 6px; padding: 1px 5px;
}
.card.red .lvl { color: var(--red-deep); }
.card.blue .lvl { color: var(--blue-deep); }

.cell:not(.flippable):not(.movable):not(.attackable) .card.revealed { cursor: default; }
.cell.flippable .card { cursor: pointer; }

/* 捕获消亡动画 */
.card.captured {
  animation: capture 0.35s ease-in forwards;
}
@keyframes capture {
  0%   { opacity: 1; transform: rotateY(180deg) scale(1); }
  100% { opacity: 0; transform: rotateY(180deg) scale(0.6); }
}

/* ---------- 补偿横幅（醒目，浮层）---------- */
.bonus-banner {
  padding: 12px 26px;
  background: linear-gradient(135deg, var(--green) 0%, #6BCF9A 100%);
  border: 2px solid #3A9E73;
  border-radius: 16px;
  color: #fff;
  font-weight: 700; font-size: 15px;
  letter-spacing: 1px;
  box-shadow: 0 8px 24px rgba(79,185,138,0.4), 0 0 0 0 rgba(79,185,138,0.6);
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  text-align: center;
  text-shadow: 0 1px 3px rgba(0,0,0,0.2);
  white-space: nowrap;
}
.bonus-banner.show {
  opacity: 1;
  animation: bonusFlash 0.8s ease, bonusPulse 1.6s ease-in-out 0.8s infinite;
}
@keyframes bonusFlash {
  0%   { box-shadow: 0 8px 24px rgba(79,185,138,0.4), 0 0 0 0 rgba(79,185,138,0.7); }
  100% { box-shadow: 0 8px 24px rgba(79,185,138,0.4), 0 0 0 24px rgba(79,185,138,0); }
}
@keyframes bonusPulse {
  0%, 100% { filter: brightness(1); }
  50%      { filter: brightness(1.12); }
}

/* ---------- 提示横幅（身份牌/AI思考等，浮层）---------- */
.tip-banner {
  padding: 12px 24px;
  border-radius: 14px;
  font-weight: 600; font-size: 14px;
  letter-spacing: 1px;
  text-align: center;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  white-space: nowrap;
}
.tip-banner.show { opacity: 1; }
.tip-banner.identity {
  background: linear-gradient(135deg, var(--sky-soft) 0%, #fff 100%);
  border: 2px solid var(--sky-deep);
  color: var(--sky-deep);
  box-shadow: 0 6px 20px rgba(59,126,161,0.25);
  animation: tipPulse 1.8s ease-in-out infinite;
}
.tip-banner.identity-set {
  background: linear-gradient(135deg, #FFF4D6 0%, #fff 100%);
  border: 2px solid #E8B84F;
  color: #B8860B;
  box-shadow: 0 6px 20px rgba(232,184,79,0.3);
  animation: tipFlash 0.6s ease;
}
.tip-banner.thinking {
  background: linear-gradient(135deg, var(--blue-soft) 0%, #fff 100%);
  border: 2px solid var(--blue);
  color: var(--blue-deep);
  box-shadow: 0 6px 20px rgba(79,143,232,0.25);
}
.tip-banner.warn {
  background: linear-gradient(135deg, var(--red-soft) 0%, #fff 100%);
  border: 2px solid var(--red);
  color: var(--red-deep);
  box-shadow: 0 6px 20px rgba(232,101,79,0.28);
  animation: tipFlash 0.6s ease;
}
.tip-banner .think-dots::after {
  content: '...';
  display: inline-block;
  width: 1.5em;
  text-align: left;
  animation: thinkDots 1.2s steps(4, end) infinite;
}
@keyframes thinkDots {
  0%   { content: ''; }
  25%  { content: '·'; }
  50%  { content: '··'; }
  75%  { content: '···'; }
  100% { content: ''; }
}
@keyframes tipPulse {
  0%, 100% { box-shadow: 0 6px 20px rgba(59,126,161,0.25); }
  50%      { box-shadow: 0 6px 20px rgba(59,126,161,0.25), 0 0 0 8px rgba(126,200,227,0.15); }
}
@keyframes tipFlash {
  0%   { filter: brightness(0.9); }
  50%  { filter: brightness(1.15); }
  100% { filter: brightness(1); }
}

/* ---------- 回合倒计时 ---------- */
.turn-timer {
  display: inline-flex; align-items: baseline; gap: 3px;
  padding: 6px 14px;
  background: rgba(255,255,255,0.8);
  border: 1.5px solid var(--sky);
  border-radius: 999px;
  color: var(--sky-deep);
  font-weight: 700;
  transition: all 0.3s;
}
.turn-timer .timer-label { font-size: 11px; color: var(--gray-500); letter-spacing: 1px; }
.turn-timer .timer-num { font-size: 18px; font-variant-numeric: tabular-nums; min-width: 28px; text-align: center; }
.turn-timer .timer-unit { font-size: 12px; color: var(--gray-500); }
.turn-timer.warn {
  background: rgba(232,101,79,0.15);
  border-color: var(--red);
  color: var(--red-deep);
  animation: timerWarn 0.6s ease-in-out infinite;
}
.turn-timer.warn .timer-label, .turn-timer.warn .timer-unit { color: var(--red-deep); }
@keyframes timerWarn {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.08); }
}

/* ---------- 弹层 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 100;
  display: none; align-items: center; justify-content: center;
  background: rgba(42,59,74,0.4);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 20px;
}
.modal.open { display: flex; animation: fadeIn 0.25s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-inner {
  position: relative;
  background: rgba(255,255,255,0.95);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 40px 44px;
  max-width: 540px; width: 100%;
  animation: popIn 0.3s cubic-bezier(.4,.1,.3,1);
}
@keyframes popIn {
  from { transform: scale(0.9) translateY(10px); opacity: 0; }
  to   { transform: scale(1) translateY(0); opacity: 1; }
}
.modal-close {
  position: absolute; top: 14px; right: 16px;
  background: none; border: none; cursor: pointer;
  font-size: 18px; color: var(--gray-500);
  width: 32px; height: 32px; border-radius: 50%;
}
.modal-close:hover { background: var(--gray-100); color: var(--ink); }

.end-inner { text-align: center; }
.end-title {
  font-family: var(--serif); font-weight: 900;
  font-size: 64px; line-height: 1; margin-bottom: 20px;
  letter-spacing: 6px;
}
.end-title.win  { color: var(--green); text-shadow: 0 4px 16px rgba(79,185,138,0.4); }
.end-title.lose { color: var(--red-deep); }
.end-title.draw { color: var(--sky-deep); }
.end-stats { margin-bottom: 28px; }
.stat-row {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  font-size: 16px; color: var(--ink-soft); margin: 8px 0;
}
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot.red { background: var(--red); }
.dot.blue { background: var(--blue); }
.modal-actions { display: flex; gap: 12px; justify-content: center; }

/* 规则弹层 */
.rules-inner { max-width: 620px; max-height: 84vh; overflow-y: auto; }

/* ---------- LLM 难度卡特殊样式 ---------- */
.diff-card-llm {
  position: relative;
  background: linear-gradient(160deg, rgba(255,255,255,0.7) 0%, rgba(126,200,227,0.25) 100%);
  border-color: rgba(59,126,161,0.4);
}
.diff-card-llm .diff-icon {
  background: linear-gradient(135deg, var(--sky-deep), #6B5BCF);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.diff-card-llm.active {
  border-color: var(--sky-deep);
  box-shadow: 0 6px 20px rgba(59,126,161,0.35);
}
.diff-status {
  display: block;
  margin-top: 6px;
  padding: 3px 8px;
  font-size: 10.5px;
  font-weight: 600;
  border-radius: 8px;
  background: rgba(107,126,142,0.18);
  color: var(--gray-500);
  letter-spacing: 0.5px;
}
.diff-status.ready {
  background: rgba(79,185,138,0.22);
  color: #2E8B63;
}
.diff-card-llm.active .diff-status:not(.ready) {
  background: rgba(230,120,80,0.18);
  color: #C04525;
}

/* ---------- LLM 设置弹层 ---------- */
.llm-inner {
  max-width: 560px;
  max-height: 88vh;
  overflow-y: auto;
}
.llm-intro {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 18px;
  padding: 12px 14px;
  background: rgba(126,200,227,0.12);
  border-left: 3px solid var(--sky);
  border-radius: 0 8px 8px 0;
}
.llm-form { display: flex; flex-direction: column; gap: 14px; }
.llm-field { display: flex; flex-direction: column; gap: 5px; }
.llm-label {
  font-size: 13px; font-weight: 600; color: var(--ink);
  letter-spacing: 0.5px;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.link-btn {
  font-family: var(--sans);
  font-size: 12px; font-weight: 500;
  background: none; border: none; cursor: pointer;
  color: var(--sky-deep);
  padding: 2px 6px; border-radius: 6px;
  text-decoration: underline;
  transition: color 0.15s, background 0.15s;
}
.link-btn:hover:not(:disabled) { color: var(--blue-deep); background: rgba(126,200,227,0.18); }
.link-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.llm-models-list {
  display: flex; flex-wrap: wrap; gap: 6px;
  max-height: 140px; overflow-y: auto;
  padding: 8px;
  margin-top: 4px;
  background: rgba(245,248,251,0.7);
  border: 1px dashed var(--gray-300);
  border-radius: 8px;
}
.llm-models-list:empty { display: none; }
.model-chip {
  font-family: var(--sans);
  font-size: 12.5px;
  padding: 4px 10px;
  background: #fff;
  border: 1px solid var(--gray-300);
  border-radius: 999px;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.15s;
}
.model-chip:hover { border-color: var(--sky); color: var(--sky-deep); background: var(--sky-mist); }
.model-chip.active {
  border-color: var(--sky-deep);
  background: var(--sky);
  color: #fff;
  font-weight: 600;
}
.llm-models-list::-webkit-scrollbar { width: 5px; }
.llm-models-list::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
.llm-field input {
  font-family: var(--sans);
  font-size: 14px;
  padding: 10px 12px;
  border: 1.5px solid var(--gray-300);
  border-radius: 8px;
  background: rgba(255,255,255,0.85);
  color: var(--ink);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.llm-field input:focus {
  outline: none;
  border-color: var(--sky);
  box-shadow: 0 0 0 3px rgba(126,200,227,0.25);
}
.llm-hint {
  font-size: 11.5px;
  color: var(--gray-500);
  line-height: 1.5;
}
.llm-test-result {
  min-height: 22px;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 0;
  text-align: center;
  border-radius: 6px;
}
.llm-test-result.loading { color: var(--sky-deep); }
.llm-test-result.ok { color: #2E8B63; }
.llm-test-result.error { color: var(--red-deep); }
.llm-actions {
  display: flex; gap: 10px;
  margin-top: 6px;
}
.llm-actions button { flex: 1; padding: 10px 14px; font-size: 14px; }
.llm-actions .warn-btn { flex: 0 0 auto; }
.llm-foot-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--gray-300);
  font-size: 12px;
  color: var(--gray-500);
  line-height: 1.7;
}
.llm-foot-note p { margin-bottom: 6px; }
.llm-foot-note b { color: var(--ink-soft); }
.rules-title {
  font-family: var(--serif); font-size: 28px; font-weight: 700;
  color: var(--sky-deep); margin-bottom: 22px; text-align: center;
  letter-spacing: 4px;
}
.rules-body section { margin-bottom: 18px; }
.rules-body h3 {
  font-size: 15px; color: var(--sky-deep); margin-bottom: 6px;
  font-weight: 700; letter-spacing: 1px;
}
.rules-body p { font-size: 13.5px; color: var(--ink-soft); line-height: 1.7; }
.rules-body b { color: var(--ink); }

/* ---------- 联机：昵称弹层 ---------- */
.nick-inner { max-width: 400px; text-align: center; position: relative; }
/* 弹窗右上角关闭按钮 */
.modal-close-btn {
  position: absolute; top: 12px; right: 14px;
  width: 30px; height: 30px; border-radius: 50%;
  border: none; cursor: pointer;
  background: rgba(107,126,142,0.12);
  color: var(--ink-soft);
  font-size: 20px; font-weight: 600; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, color 0.2s, transform 0.1s;
}
.modal-close-btn:hover {
  background: var(--red-soft); color: var(--red-deep);
  transform: scale(1.08);
}
.nick-form { display: flex; flex-direction: column; gap: 14px; align-items: center; }
.nick-form input {
  font-family: var(--sans); font-size: 16px;
  padding: 12px 18px; border-radius: 999px;
  border: 2px solid var(--gray-300);
  background: rgba(255,255,255,0.8);
  width: 100%; max-width: 300px;
  text-align: center;
  outline: none;
  transition: border-color 0.2s;
}
.nick-form input:focus { border-color: var(--sky-deep); }

/* ---------- 联机：大厅 ---------- */
.lobby-inner {
  width: 100%; max-width: 520px;
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px 28px;
  margin: auto;
}
.lobby-header {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 28px; padding-bottom: 16px;
  border-bottom: 1px solid rgba(126,200,227,0.3);
}
.lobby-title { font-family: var(--serif); font-size: 24px; font-weight: 700; color: var(--sky-deep); letter-spacing: 2px; }
.lobby-nick { font-size: 13px; color: var(--ink-soft); margin-left: auto; }
.lobby-actions { display: flex; flex-direction: column; gap: 16px; }
.lobby-btn { font-size: 16px; padding: 14px 24px; width: 100%; }
.join-block { display: flex; gap: 10px; }
.code-input {
  font-family: monospace; font-size: 20px; font-weight: 700;
  letter-spacing: 6px; text-align: center;
  padding: 10px 14px; border-radius: 12px;
  border: 2px solid var(--gray-300);
  background: rgba(255,255,255,0.8);
  flex: 1;
  text-transform: uppercase;
  outline: none;
  transition: border-color 0.2s;
}
.code-input:focus { border-color: var(--sky-deep); }
.lobby-msg { font-size: 13px; color: var(--red); margin-top: 12px; text-align: center; }

/* ---------- 联机：房间 ---------- */
.room-inner {
  width: 100%; max-width: 520px;
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px 28px;
  margin: auto;
}
.room-header {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 24px; padding-bottom: 14px;
  border-bottom: 1px solid rgba(126,200,227,0.3);
}
.room-code-label { font-size: 15px; color: var(--ink-soft); letter-spacing: 1px; }
.room-code-num {
  font-family: monospace; font-size: 24px; font-weight: 900;
  letter-spacing: 8px; color: var(--sky-deep);
  margin-left: 6px;
}
.room-countdown {
  font-size: 48px; font-weight: 900; color: var(--sky-deep);
  margin-left: auto;
  animation: countPulse 0.8s ease-in-out infinite;
  display: none;
}
.room-countdown.show { display: block; }
.room-action-btn {
  font-size: 12px; padding: 5px 10px;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
@keyframes countPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.6; }
}
.room-players { display: flex; align-items: center; gap: 20px; margin-bottom: 24px; }
.room-player-slot {
  flex: 1; text-align: center;
  padding: 18px 14px; border-radius: var(--radius);
  background: rgba(255,255,255,0.5);
  border: 2px dashed var(--gray-300);
  transition: border-color 0.3s, background 0.3s;
}
.room-player-slot.ready { border-color: var(--green); border-style: solid; background: var(--green-soft); }
.room-player-slot.you { border-color: var(--sky-deep); background: rgba(126,200,227,0.15); }
.slot-icon { font-size: 32px; display: block; margin-bottom: 6px; }
.slot-name { font-size: 16px; font-weight: 600; color: var(--ink); }
.slot-status { font-size: 12px; color: var(--gray-500); }
.room-player-slot.ready .slot-status { color: var(--green); font-weight: 600; }
.room-vs { font-size: 22px; font-weight: 700; color: var(--gray-300); }
.room-actions { text-align: center; margin-bottom: 14px; }
.room-actions .primary-btn { padding: 14px 48px; font-size: 17px; }
.room-tip { font-size: 13px; color: var(--gray-500); text-align: center; }

/* ---------- 联机：聊天面板 ---------- */
.chat-card {
  display: flex; flex-direction: column;
  max-height: 200px; min-height: 0;
}
.chat-messages {
  flex: 1; overflow-y: auto; min-height: 0;
  display: flex; flex-direction: column; gap: 4px;
  font-size: 12.5px; line-height: 1.5;
  padding-right: 2px;
  margin-bottom: 8px;
}
.chat-messages::-webkit-scrollbar { width: 5px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
.chat-msg { padding: 4px 8px; border-radius: 8px; line-height: 1.4; }
.chat-msg.system { color: var(--gray-500); font-size: 11.5px; font-style: italic; text-align: center; }
.chat-msg .msg-nick { font-weight: 600; color: var(--sky-deep); }
.chat-msg .msg-text { color: var(--ink); }
.chat-msg .msg-time { font-size: 10px; color: var(--gray-500); margin-left: 6px; }
.chat-msg.mine { text-align: right; }
.chat-msg.mine .msg-nick { color: var(--blue); }
.chat-input-row {
  display: flex; gap: 6px;
}
.chat-input-row input {
  flex: 1; font-family: var(--sans); font-size: 13px;
  padding: 7px 10px; border-radius: 999px;
  border: 1.5px solid var(--gray-300);
  background: rgba(255,255,255,0.7);
  outline: none;
  transition: border-color 0.2s;
}
.chat-input-row input:focus { border-color: var(--sky); }
.chat-send-btn {
  font-family: var(--sans); font-size: 13px; font-weight: 600;
  padding: 7px 16px; border-radius: 999px;
  border: none; cursor: pointer;
  background: var(--sky-deep); color: #fff;
  transition: background 0.2s;
}
.chat-send-btn:hover { background: var(--blue-deep); }

/* ───────── 手机端聊天浮动按钮 ───────── */
.chat-toggle-btn {
  position: fixed; bottom: 20px; right: 20px; z-index: 100;
  width: 52px; height: 52px; border-radius: 50%;
  border: none; cursor: pointer;
  background: var(--sky-deep); color: #fff;
  font-size: 22px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  transition: transform 0.2s, box-shadow 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.chat-toggle-btn:active { transform: scale(0.92); box-shadow: 0 2px 8px rgba(0,0,0,0.2); }
.chat-badge {
  position: absolute; top: -4px; right: -4px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--red); color: #fff; font-size: 10px;
  font-weight: 700; display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: scale(0);
  transition: opacity 0.25s, transform 0.25s;
}
.chat-badge.has-unread {
  opacity: 1; transform: scale(1);
}

/* ───────── 手机端聊天弹窗 ───────── */
.chat-modal {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
  background: #fff; border-radius: 16px 16px 0 0;
  box-shadow: 0 -4px 24px rgba(0,0,0,0.18);
  display: flex; flex-direction: column;
  max-height: 60vh; min-height: 280px;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(.4,0,.2,1);
  visibility: hidden;
}
.chat-modal.open {
  transform: translateY(0);
  visibility: visible;
}
.chat-modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--gray-200);
  font-weight: 700; font-size: 16px; color: var(--ink);
}
.chat-modal-close {
  background: none; border: none; font-size: 20px;
  color: var(--gray-500); cursor: pointer; padding: 4px 8px;
  -webkit-tap-highlight-color: transparent;
}
.chat-modal .chat-messages {
  flex: 1; overflow-y: auto; padding: 10px 16px;
  display: flex; flex-direction: column; gap: 4px;
  font-size: 13px; line-height: 1.5;
}
.chat-modal .chat-input-row {
  padding: 10px 16px 16px; border-top: 1px solid var(--gray-200);
  display: flex; gap: 8px;
}
.chat-modal .chat-input-row input {
  flex: 1; font-family: var(--sans); font-size: 14px;
  padding: 10px 14px; border-radius: 999px;
  border: 1.5px solid var(--gray-300);
  background: var(--gray-100); outline: none;
}
.chat-modal .chat-input-row input:focus { border-color: var(--sky); }
.chat-modal .chat-send-btn {
  font-size: 14px; padding: 10px 20px;
}
/* 聊天弹窗遮罩 */
.chat-modal-backdrop {
  position: fixed; inset: 0; z-index: 199;
  background: rgba(0,0,0,0.35);
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s;
}
.chat-modal-backdrop.show {
  opacity: 1; visibility: visible;
}

/* ───────── PC 端浮动聊天卡片（左下角） ───────── */
.chat-float-card {
  position: fixed; bottom: 16px; left: 16px; z-index: 90;
  width: 280px; max-height: 340px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: 14px;
  box-shadow: 0 8px 28px rgba(59,126,161,0.18);
  display: flex; flex-direction: column;
  overflow: hidden;
  transition: opacity 0.3s, transform 0.3s;
}
.chat-float-card.hidden {
  display: none;
}
.chat-float-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  background: var(--sky-mist);
  border-bottom: 1px solid rgba(126,200,227,0.25);
  font-weight: 700; font-size: 14px; color: var(--sky-deep);
  flex-shrink: 0;
}
.chat-float-close {
  background: none; border: none; font-size: 16px;
  color: var(--gray-500); cursor: pointer; padding: 2px 6px;
  border-radius: 4px;
}
.chat-float-close:hover { color: var(--ink); background: rgba(255,255,255,0.6); }
.chat-float-card .chat-messages {
  flex: 1; overflow-y: auto; min-height: 0;
  padding: 8px 12px;
  display: flex; flex-direction: column; gap: 4px;
  font-size: 12.5px; line-height: 1.5;
  max-height: 200px;
}
.chat-float-card .chat-messages::-webkit-scrollbar { width: 5px; }
.chat-float-card .chat-messages::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
.chat-float-card .chat-input-row {
  padding: 8px 10px 10px;
  border-top: 1px solid rgba(126,200,227,0.2);
  display: flex; gap: 6px;
  flex-shrink: 0;
}
.chat-float-card .chat-input-row input {
  flex: 1; font-family: var(--sans); font-size: 13px;
  padding: 7px 10px; border-radius: 999px;
  border: 1.5px solid var(--gray-300);
  background: rgba(255,255,255,0.7);
  outline: none;
  transition: border-color 0.2s;
}
.chat-float-card .chat-input-row input:focus { border-color: var(--sky); }
.chat-float-card .chat-send-btn {
  font-size: 13px; padding: 7px 14px;
}

/* 联机按钮高亮 */
.online-btn-highlight {
  border-color: var(--green) !important;
  color: var(--green) !important;
}
.online-btn-highlight:hover { background: var(--green-soft) !important; }

/* ---------- 阵营告知弹层（联机） ---------- */
.faction-inner {
  text-align: center; padding: 36px 40px;
  max-width: 380px; width: 90%;
}
.faction-title {
  font-family: var(--serif); font-size: 26px; font-weight: 700;
  color: var(--ink); margin-bottom: 18px;
}
.faction-content { margin-bottom: 24px; }
.faction-content .faction-label {
  font-size: 15px; color: var(--ink-soft); margin-bottom: 12px;
}
.faction-content .faction-big {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--serif); font-size: 32px; font-weight: 900;
  padding: 14px 36px; border-radius: 18px;
  margin-bottom: 12px;
}
.faction-content .faction-big.red { color: var(--red-deep); background: var(--red-soft); }
.faction-content .faction-big.blue { color: var(--blue-deep); background: var(--blue-soft); }
.faction-content .faction-first {
  font-size: 14px; color: var(--ink-soft);
}
.faction-content .faction-first b { color: var(--sky-deep); }

/* ---------- 房间踢人按钮 ---------- */
.slot-host-badge {
  font-size: 11px; font-weight: 600;
  background: var(--green-soft); color: var(--green);
  padding: 2px 10px; border-radius: 999px;
  margin-top: 6px;
}
.slot-host-badge.hidden { display: none; }
.slot-kick-btn {
  position: absolute; top: 8px; right: 8px;
  width: 26px; height: 26px; border-radius: 50%;
  border: none; cursor: pointer;
  background: var(--red-soft); color: var(--red-deep);
  font-size: 14px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, transform 0.1s;
}
.slot-kick-btn:hover { background: var(--red); color: #fff; transform: scale(1.1); }
.slot-kick-btn.hidden { display: none; }
.room-player-slot { position: relative; }

/* ---------- PC 聊天最小化 ---------- */
.chat-float-card.collapsed .chat-float-body { display: none; }
.chat-float-card.collapsed { max-height: 42px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .game-body { grid-template-columns: 200px 1fr; }
  .side-panel.right { grid-column: 1 / -1; grid-row: 2; }
  .side-panel.right .log-card { max-height: 140px; }
  .board { width: min(100%, 480px); }
}
@media (max-width: 768px) {
  html, body { overflow: auto; }
  .screen { height: auto; min-height: 100vh; }
  /* 局内允许上下滚动（修复移动端无法上滑看日志） */
  #game-screen { height: auto; min-height: 100vh; overflow: visible; }
  .game-body {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    padding: 10px; gap: 8px;
    overflow: visible;
  }
  .side-panel.left { flex-direction: row; gap: 8px; }
  .side-panel.left .panel-card { flex: 1; padding: 10px 12px; }
  .side-panel.left .panel-title { font-size: 13px; margin-bottom: 8px; padding-bottom: 6px; }
  .side-panel.left .action-btn { font-size: 12px; padding: 8px 10px; }
  .side-panel.left .tip { display: none; }
  .legend { display: none; }
  /* 日志：移动端固定高度，可滚动，默认显示最新 5 条 */
  .side-panel.right { grid-row: 3; }
  .side-panel.right .log-card {
    max-height: 180px;
    padding: 10px 12px;
  }
  .side-panel.right .log {
    font-size: 11.5px;
    max-height: 140px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .side-panel.right .panel-title { font-size: 13px; margin-bottom: 6px; padding-bottom: 4px; }
  /* 头部紧凑 */
  .game-header { flex-wrap: wrap; padding: 8px 12px; gap: 8px; }
  .header-left, .header-right { flex: 1 1 auto; gap: 8px; }
  .header-center { order: 3; width: 100%; justify-content: center; gap: 16px; }
  .turn-indicator { min-width: 0; font-size: 13px; }
  .turn-tag { padding: 5px 12px; font-size: 12px; }
  .bonus-label { font-size: 10px; }
  .bonus-stars { font-size: 15px; }
  .diff-tag { font-size: 11px; padding: 4px 10px; }
  .warn-btn { font-size: 12px; padding: 5px 12px; }
  .icon-btn { font-size: 11px; padding: 5px 10px; }
  .turn-timer { padding: 4px 10px; }
  .turn-timer .timer-num { font-size: 15px; min-width: 22px; }
  .turn-timer .timer-label, .turn-timer .timer-unit { font-size: 10px; }
  .player-faction { font-size: 12px; }
  /* 棋盘适配 */
  .board-wrap { min-height: 0; padding: 4px 0; }
  .board {
    width: min(96vw, 460px);
    max-width: 100%;
    padding: 10px;
    gap: 6px;
  }
  /* 横幅适配 */
  #tip-banner.tip-banner, #bonus-banner.bonus-banner { max-width: 94%; font-size: 12px; padding: 9px 16px; }
  .tip-banner { font-size: 12px; }
  /* AI 消息条移动端缩小 */
  #ai-speech.ai-speech { font-size: 11.5px; padding: 6px 10px; max-width: 70%; }
  .face.back { font-size: 28px; }
  .animal { font-size: clamp(26px, 7vw, 36px); }
  .lvl { font-size: 9px; padding: 1px 4px; }
  .start-inner { padding: 28px 16px 22px; }
  .title { font-size: clamp(36px, 11vw, 56px); letter-spacing: 4px; }
  /* 难度卡：移动端改为 2x2 网格，更紧凑 */
  .diff-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .diff-card { padding: 14px 8px; }
  .diff-icon { font-size: 22px; }
  .diff-name { font-size: 17px; }
  .diff-desc { font-size: 11px; line-height: 1.4; }
  .diff-status { font-size: 10px; padding: 2px 6px; margin-top: 4px; }
  /* 底部按钮：移动端允许换行 + 全宽适配 */
  .start-actions {
    flex-wrap: wrap;
    gap: 10px;
  }
  .start-actions .primary-btn,
  .start-actions .ghost-btn {
    flex: 1 1 auto;
    min-width: 140px;
    padding: 12px 20px;
    font-size: 14px;
    letter-spacing: 1px;
  }
  .end-title { font-size: 44px; letter-spacing: 4px; }
  .modal-inner { padding: 28px 22px; }
  /* 联机房间移动端 */
  .lobby-inner, .room-inner { padding: 24px 16px; }
  .room-code-num { font-size: 20px; letter-spacing: 4px; }
  .room-players { gap: 12px; }
  .room-player-slot { padding: 14px 10px; }
  .slot-icon { font-size: 26px; }
  .slot-name { font-size: 14px; }
  /* 聊天面板移动端缩小 */
  .chat-card { max-height: 150px; }
  .chat-messages { font-size: 11.5px; }
  .chat-input-row input { font-size: 12px; padding: 6px 8px; }
  .chat-send-btn { font-size: 12px; padding: 6px 12px; }
  /* 手机端：隐藏面板聊天，显示浮动按钮 */
  .chat-card { display: none !important; }
  .chat-float-card { display: none !important; }
  .chat-toggle-btn { display: flex !important; }
}
@media (min-width: 769px) {
  /* 桌面端：显示左下角浮动聊天卡片，隐藏移动端按钮和弹窗 */
  .chat-toggle-btn { display: none !important; }
  .chat-modal, .chat-modal-backdrop { display: none !important; }
}
@media (max-width: 480px) {
  .game-header { padding: 6px 8px; gap: 6px; }
  .header-left { flex: 1 1 100%; }
  .header-right { flex: 1 1 100%; justify-content: space-between; }
  .header-center { order: 0; gap: 12px; }
  .turn-indicator { font-size: 12px; }
  .game-body { padding: 6px; gap: 6px; }
  .side-panel.left { flex-direction: column; }
  .side-panel.left .panel-card { padding: 8px 10px; }
  /* 日志在小屏依然可滚动，固定高度显示约 5 条 */
  .side-panel.right .log-card { max-height: 160px; }
  .side-panel.right .log { max-height: 120px; }
  .board { width: min(94vw, 360px); padding: 8px; gap: 5px; }
  .cell { border-radius: 8px; }
  .face { border-radius: 7px; }
  .face.back { font-size: 22px; }
  .animal { font-size: clamp(22px, 8vw, 30px); }
  .hint .arrow { font-size: 16px; }
  .primary-btn, .ghost-btn { font-size: 13px; padding: 11px 18px; }
  /* 480px 以下难度卡仍保持 2 列，避免单列过长 */
  .diff-card { padding: 12px 6px; }
  .diff-icon { font-size: 20px; }
  .diff-name { font-size: 16px; }
  .diff-desc { font-size: 10.5px; }
  .end-title { font-size: 36px; }
  /* 超小屏按钮更紧凑 */
  .start-actions .primary-btn,
  .start-actions .ghost-btn {
    min-width: 120px;
    padding: 10px 14px;
    font-size: 13px;
  }
  /* 联机聊天面板在小屏更紧凑 */
  .chat-card { max-height: 130px; padding: 10px 12px; }
  .chat-messages { font-size: 11px; }
  .chat-input-row input { font-size: 11px; padding: 5px 7px; }
  .chat-send-btn { font-size: 11px; padding: 5px 10px; }
  /* 计时器醒目 */
  .turn-timer { padding: 3px 8px; }
  .turn-timer .timer-num { font-size: 14px; min-width: 20px; }
  .turn-timer.warn { border-width: 2px; }
  /* 提示横幅更紧凑 */
  .tip-banner { font-size: 11px; padding: 8px 14px; }
  #tip-banner.tip-banner, #bonus-banner.bonus-banner { padding: 7px 12px; font-size: 11px; }
  /* 联机房间 */
  .lobby-inner, .room-inner { padding: 18px 12px; }
  .room-code-num { font-size: 18px; letter-spacing: 3px; }
  .room-players { gap: 8px; }
  .room-player-slot { padding: 10px 8px; }
  .slot-icon { font-size: 22px; }
  .slot-name { font-size: 12px; }
  .room-vs { font-size: 16px; }
  .room-actions .primary-btn { padding: 12px 32px; font-size: 15px; }
}
/* 横屏手机：高度受限时进一步压缩 */
@media (max-width: 900px) and (max-height: 500px) {
  #game-screen { height: 100vh; overflow: hidden; }
  .game-body { grid-template-rows: auto 1fr; overflow: hidden; }
  .side-panel.right { display: none; }
  .board { width: min(70vh, 360px); }
}
/* 极小屏：320px 及以下 */
@media (max-width: 374px) {
  .board { width: 96vw; padding: 6px; gap: 4px; }
  .cell { border-radius: 6px; }
  .face { border-radius: 5px; }
  .face.back { font-size: 18px; }
  .animal { font-size: clamp(18px, 7vw, 24px); }
  .lvl { font-size: 8px; padding: 1px 3px; }
  .card { width: 90%; height: 90%; }
  .hint .arrow { font-size: 14px; }
  .game-header { padding: 4px 6px; gap: 4px; }
  .turn-tag { padding: 4px 8px; font-size: 11px; }
  .turn-timer { padding: 2px 6px; }
  .turn-timer .timer-num { font-size: 12px; min-width: 16px; }
  .turn-timer .timer-label, .turn-timer .timer-unit { font-size: 9px; }
  .chat-card { max-height: 110px; padding: 8px 10px; }
  .chat-messages { font-size: 10px; }
  .chat-input-row input { font-size: 10px; padding: 4px 6px; }
  .chat-send-btn { font-size: 10px; padding: 4px 8px; }
  .side-panel.right .log-card { max-height: 130px; }
  .side-panel.right .log { max-height: 100px; font-size: 10.5px; }
  .tip-banner { font-size: 10px; padding: 6px 10px; }
  .lobby-inner, .room-inner { padding: 14px 10px; }
  .room-code-num { font-size: 16px; letter-spacing: 2px; }
  .slot-icon { font-size: 18px; }
  .slot-name { font-size: 11px; }
  .room-actions .primary-btn { padding: 10px 24px; font-size: 14px; }
  .start-inner { padding: 20px 10px 16px; }
  .start-actions .primary-btn,
  .start-actions .ghost-btn {
    min-width: 100px;
    padding: 8px 10px;
    font-size: 12px;
  }
}