/* ============================================
   扑克算术大冒险 v3.0 - 修复版样式
   ============================================ */

/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

:root {
  --primary: #FF6B9D;
  --primary-light: #FFB8D0;
  --secondary: #4ECDC4;
  --accent: #FFE66D;
  --purple: #C084FC;
  --blue: #60A5FA;
  --green: #4ADE80;
  --orange: #FB923C;
  --glass-white: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.9);
  --text-primary: #1F2937;
  --text-secondary: #6B7280;
}

body {
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #E0F2FE 0%, #F0E9FF 50%, #FFE4E6 100%);
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--text-primary);
}

/* ===== 主菜单 ===== */
.menu-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  gap: 32px;
}

.title-section {
  text-align: center;
}

.main-title {
  font-size: clamp(2rem, 8vw, 3.5rem);
  font-weight: 900;
  margin-bottom: 8px;
}

.main-title .highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* 难度选择 */
.difficulty-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  width: 100%;
  max-width: 600px;
}

.difficulty-card {
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  border: 2px solid var(--glass-border);
  border-radius: 24px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.difficulty-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
}

.difficulty-card.selected {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.2);
}

.difficulty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.difficulty-name {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.difficulty-range {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* 开始按钮 */
.start-btn {
  padding: 16px 32px;
  font-size: 1.3rem;
  font-weight: 900;
  color: white;
  background: linear-gradient(135deg, var(--primary), #E85A8C);
  border: none;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 8px 24px rgba(255, 107, 157, 0.4);
}

.start-btn:hover {
  transform: translateY(-4px) scale(1.05);
}

.start-btn.hidden {
  display: none !important;
}

/* ===== 游戏界面 ===== */
.game-screen {
  display: none;
  min-height: 100vh;
  flex-direction: column;
  padding: 16px;
  gap: 16px;
}

.game-screen.active {
  display: flex;
}

/* 顶部信息栏 */
.info-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  border: 2px solid var(--glass-border);
  box-shadow: 0 8px 32px rgba(31, 38, 135, 0.1);
}

.back-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 107, 157, 0.2);
  color: #FF6B9D;
  border: 2px solid rgba(255, 107, 157, 0.3);
  cursor: pointer;
  transition: all 0.2s;
}

.back-btn:hover {
  transform: scale(1.1);
}

.target-section {
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.target-label {
  font-size: 0.75rem;
  color: #9CA3AF;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.target-number {
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: targetPulse 2.5s ease-in-out infinite;
  line-height: 1;
}

@keyframes targetPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

.stats {
  display: flex;
  gap: 12px;
}

.stat-box {
  text-align: center;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 12px;
}

.stat-label {
  font-size: 0.7rem;
  color: #9CA3AF;
  font-weight: 700;
  text-transform: uppercase;
}

.stat-value {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--text-primary);
  font-family: monospace;
}

/* 算式区 */
.formula-section {
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  border: 2px solid var(--glass-border);
  padding: 16px;
  box-shadow: 0 8px 32px rgba(31, 38, 135, 0.1);
}

.formula-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.formula-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 700;
}

.result-display {
  font-size: 0.95rem;
  font-weight: 800;
  padding: 6px 12px;
  background: rgba(157, 78, 221, 0.15);
  color: #7C3AED;
  border-radius: 12px;
  min-width: 80px;
  text-align: center;
  transition: all 0.3s;
}

.result-display.correct {
  background: rgba(74, 222, 128, 0.2);
  color: #22C55E;
}

.result-display.wrong {
  background: rgba(255, 107, 157, 0.2);
  color: #E85A8C;
}

.formula-slots {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 8px 0;
  min-height: 70px;
}

.slot {
  min-width: 52px;
  height: 64px;
  background: rgba(255, 255, 255, 0.6);
  border: 2px dashed rgba(0, 0, 0, 0.1);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 900;
  flex-shrink: 0;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.slot.filled {
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.15), rgba(192, 132, 252, 0.15));
  border-style: solid;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(255, 107, 157, 0.2);
}

.slot.error {
  animation: shake 0.5s;
  border-color: var(--primary);
  background: rgba(255, 107, 157, 0.1);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

.formula-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 12px;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 0.95rem;
  font-weight: 700;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.action-btn.clear {
  background: rgba(255, 107, 157, 0.15);
  color: #E85A8C;
}

.action-btn.arrange {
  background: rgba(78, 205, 196, 0.15);
  color: #3DBDB4;
}

.action-btn:hover {
  transform: scale(1.05);
}

/* 手牌区 */
.hand-section {
  flex: 1;
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  border: 2px solid var(--glass-border);
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 150px;
  box-shadow: 0 8px 32px rgba(31, 38, 135, 0.1);
}

.hand-label {
  font-size: 0.85rem;
  color: #9CA3AF;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hand-cards {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  min-height: 100px;
}

/* 扑克牌 */
.poker-card {
  width: 70px;
  height: 95px;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  position: relative;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  border: 2px solid transparent;
}

.poker-card:hover:not(.used) {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 12px 24px rgba(255, 107, 157, 0.25);
  border-color: rgba(255, 107, 157, 0.3);
}

.poker-card.used {
  opacity: 0.5;
  transform: scale(0.85);
  filter: grayscale(1) brightness(0.7);
  cursor: not-allowed;
  border: 2px solid rgba(0, 0, 0, 0.1);
  box-shadow: none;
  background: linear-gradient(135deg, #e5e5e5 0%, #d4d4d4 100%);
}

.poker-card.used .card-center,
.poker-card.used .card-corner {
  opacity: 0.4;
}

.poker-card.red { color: #FF6B9D; }
.poker-card.black { color: #1F2937; }

.card-corner {
  position: absolute;
  font-size: 12px;
  font-weight: 900;
  line-height: 1;
  text-align: center;
}

.card-corner.top { top: 6px; left: 6px; }
.card-corner.bottom { bottom: 6px; right: 6px; transform: rotate(180deg); }

.card-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 28px;
}

/* 抽牌按钮 */
.deal-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(8px);
  border-radius: 20px;
  z-index: 10;
}

.deal-overlay.hidden {
  display: none !important;
}

.deal-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  font-size: 1.2rem;
  font-weight: 900;
  color: white;
  background: linear-gradient(135deg, #C084FC, #7C3AED);
  border: none;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 8px 24px rgba(192, 132, 252, 0.4);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 8px 24px rgba(192, 132, 252, 0.4); }
  50% { box-shadow: 0 12px 32px rgba(192, 132, 252, 0.6); }
}

.deal-btn:hover {
  transform: translateY(-3px) scale(1.05);
}

/* 牌背设计 - 与普通卡片对齐 */
.deck-card {
  position: relative !important;
  transform: none !important;
  left: auto !important;
  top: auto !important;
  background: linear-gradient(135deg, #C084FC, #7C3AED);
  box-shadow: 0 12px 32px rgba(124, 58, 237, 0.4), inset 0 2px 4px rgba(255, 255, 255, 0.3);
}

/* 火箭图标容器 */
.rocket-icon-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 16px;
  height: 60px;
}

.rocket-svg {
  transition: transform 0.3s ease;
}

/* 火箭螺旋升空动画 */
@keyframes rocketSpiralLaunch {
  0% {
    transform: translateY(0) translateX(0) rotate(0deg) scale(1);
    opacity: 1;
  }
  25% {
    transform: translateY(-30px) translateX(10px) rotate(90deg) scale(1.05);
  }
  50% {
    transform: translateY(-80px) translateX(-15px) rotate(180deg) scale(1.1);
  }
  75% {
    transform: translateY(-150px) translateX(20px) rotate(270deg) scale(1.15);
  }
  100% {
    transform: translateY(-300px) translateX(0) rotate(360deg) scale(0.5);
    opacity: 0;
  }
}

.rocket-launching {
  animation: rocketSpiralLaunch 0.8s ease-in forwards;
}

/* 运算符 */
.operators-section {
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  border: 2px solid var(--glass-border);
  padding: 16px;
  box-shadow: 0 8px 32px rgba(31, 38, 135, 0.1);
}

.operators-grid {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.op-btn {
  width: 56px;
  height: 56px;
  font-size: 1.5rem;
  font-weight: 900;
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.2), 0 6px 12px rgba(0, 0, 0, 0.15);
}

.op-btn:active {
  transform: translateY(4px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}

.op-btn.add { background: linear-gradient(135deg, #4ADE80, #22C55E); }
.op-btn.sub { background: linear-gradient(135deg, #FB923C, #F97316); }
.op-btn.mul { background: linear-gradient(135deg, #C084FC, #9333EA); }
.op-btn.div { background: linear-gradient(135deg, #FFE66D, #FACC15); color: #1F2937; }
.op-btn.par { background: linear-gradient(135deg, #60A5FA, #3B82F6); }

/* 胜利弹窗 */
.victory-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.victory-modal.active {
  display: flex;
}

.victory-content {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
  backdrop-filter: blur(20px);
  border-radius: 24px;
  padding: 36px 28px;
  text-align: center;
  max-width: 340px;
  width: 100%;
  border: 2px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15), 0 8px 24px rgba(124, 58, 237, 0.1);
}

.victory-icon {
  margin: 0 auto 20px;
  animation: trophyPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  justify-content: center;
}

@keyframes trophyPop {
  0% { transform: scale(0) rotate(-15deg); opacity: 0; }
  60% { transform: scale(1.15) rotate(5deg); }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}

/* 飘带动画 */
.confetti-container {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100px;
  pointer-events: none;
  overflow: hidden;
  z-index: 1;
}

.confetti {
  position: absolute;
  top: -20px;
  width: 10px;
  height: 20px;
  border-radius: 2px;
  animation: confettiFall 2.5s ease-out forwards;
  opacity: 0;
}

@keyframes confettiFall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(300px) rotate(720deg); opacity: 0; }
}

/* 统计图标 */
.stat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(78, 205, 196, 0.15);
  margin-right: 8px;
}

.stat-icon.star-icon {
  background: rgba(255, 107, 157, 0.15);
}

.victory-title {
  font-size: 1.6rem;
  font-weight: 900;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #FF6B9D, #C084FC);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.victory-stats {
  background: rgba(124, 58, 237, 0.05);
  border-radius: 16px;
  padding: 16px 20px;
  margin: 20px 0;
  border: 1px solid rgba(124, 58, 237, 0.1);
}

.victory-stat {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
  gap: 8px;
}

.victory-stat:last-child {
  margin-bottom: 0;
}

.victory-btn {
  width: 100%;
  padding: 14px 20px;
  margin-top: 10px;
  font-size: 1rem;
  font-weight: 800;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.victory-btn.primary {
  background: linear-gradient(135deg, #FF6B9D, #E85A8C);
  color: white;
  box-shadow: 0 4px 16px rgba(255, 107, 157, 0.35);
}

.victory-btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 157, 0.45);
}

.victory-btn.secondary {
  background: rgba(255, 255, 255, 0.9);
  color: #6B7280;
  border: 2px solid rgba(0, 0, 0, 0.08);
}

.victory-btn.secondary:hover {
  background: rgba(255, 255, 255, 1);
  border-color: rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

/* 头部 */
.header {
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 音频控制 */
.audio-control {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--glass-white);
  backdrop-filter: blur(10px);
  border-radius: 9999px;
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: all 0.2s;
}

.audio-control:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: scale(1.05);
}

.audio-panel {
  position: fixed;
  top: 80px;
  right: 20px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: 20px;
  padding: 20px;
  z-index: 50;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  min-width: 220px;
}

.audio-panel.hidden {
  display: none;
}

.volume-control {
  margin-bottom: 16px;
}

.volume-control:last-child {
  margin-bottom: 0;
}

.volume-control label {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.volume-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.1);
  outline: none;
  -webkit-appearance: none;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(255, 107, 157, 0.4);
}

.mute-btn {
  width: 100%;
  padding: 10px;
  border-radius: 12px;
  background: rgba(255, 107, 157, 0.15);
  color: #E85A8C;
  border: none;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.mute-btn:hover {
  background: rgba(255, 107, 157, 0.25);
}

/* 响应式 */
@media (max-width: 640px) {
  .difficulty-grid {
    grid-template-columns: 1fr;
  }
  
  .poker-card {
    width: 60px;
    height: 82px;
  }
  
  .card-center {
    font-size: 24px;
  }
  
  .op-btn {
    width: 48px;
    height: 48px;
    font-size: 1.3rem;
  }
  
  .header {
    padding: 12px 16px;
  }
  
  .logo {
    font-size: 1.2rem;
  }
}

/* 隐藏 */
.hidden {
  display: none !important;
}