/* 全局样式和变量 */
:root {
  /* 默认主题 */
  --primary-color: #4a6fa5;
  --secondary-color: #6b8cb7;
  --accent-color: #ff6b6b;
  --background-color: #f8f9fa;
  --card-background: #ffffff;
  --text-primary: #2d3748;
  --text-secondary: #4a5568;
  --border-color: #e2e8f0;
  --success-color: #38a169;
  --danger-color: #e53e3e;
  --warning-color: #ed8936;
  --grid-border: #c0c0c0;
  --cell-background: #d9d9d9;
  --cell-hover: #bfbfbf;
  --cell-active: #a6a6a6;

  /* 游戏难度级别颜色 */
  --beginner-color: #48bb78;
  --intermediate-color: #ed8936;
  --expert-color: #e53e3e;

  /* 字体和间距 */
  --font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --border-radius: 8px;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

/* 暗黑主题 */
body.dark-theme {
  --primary-color: #63b3ed;
  --secondary-color: #4299e1;
  --accent-color: #fc8181;
  --background-color: #1a202c;
  --card-background: #2d3748;
  --text-primary: #f7fafc;
  --text-secondary: #e2e8f0;
  --border-color: #4a5568;
  --grid-border: #4a5568;
  --cell-background: #4a5568;
  --cell-hover: #718096;
  --cell-active: #a0aec0;
}

/* 柔和主题 */
body.pastel-theme {
  --primary-color: #90cdf4;
  --secondary-color: #bee3f8;
  --accent-color: #fed7d7;
  --background-color: #f7fafc;
  --card-background: #ffffff;
  --text-primary: #2d3748;
  --text-secondary: #4a5568;
  --border-color: #edf2f7;
  --grid-border: #cbd5e0;
  --cell-background: #e2e8f0;
  --cell-hover: #cbd5e0;
  --cell-active: #a0aec0;
}

/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--background-color);
  color: var(--text-primary);
  transition: var(--transition);
  overflow-x: hidden;
}

.container {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

/* 屏幕样式 */
.screen {
  width: auto;
  min-width: 800px;
  background-color: var(--card-background);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 40px;
  margin-bottom: 20px;
  text-align: center;
  transition: var(--transition);
}

/* 标题样式 */
h1,
h2,
h3 {
  color: var(--primary-color);
  margin-bottom: 20px;
  font-weight: 700;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 1.8rem;
  margin-bottom: 30px;
}

h3 {
  font-size: 1.3rem;
  margin-top: 25px;
  margin-bottom: 15px;
}

p {
  color: var(--text-secondary);
  margin-bottom: 25px;
  line-height: 1.6;
  font-size: 1.1rem;
}

/* 按钮样式 */
button {
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  padding: 12px 24px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  outline: none;
  margin: 8px;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

button:active {
  transform: translateY(0);
}

.primary-btn {
  background-color: var(--primary-color);
  color: white;
}

.primary-btn:hover {
  background-color: var(--secondary-color);
}

.secondary-btn {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.secondary-btn:hover {
  background-color: var(--primary-color);
  color: white;
}

.mode-btn,
.challenge-btn {
  width: 100%;
  max-width: 250px;
  padding: 15px;
  font-size: 1.1rem;
  background-color: var(--secondary-color);
  color: white;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  margin: 10px 0;
}

.mode-btn:hover,
.challenge-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

/* 难度级别特定颜色 */
.mode-btn[data-mode="beginner"] {
  background-color: var(--beginner-color);
}

.mode-btn[data-mode="beginner"]:hover {
  background-color: #38a169;
}

.mode-btn[data-mode="intermediate"] {
  background-color: var(--intermediate-color);
}

.mode-btn[data-mode="intermediate"]:hover {
  background-color: #dd6b20;
}

.mode-btn[data-mode="expert"] {
  background-color: var(--expert-color);
}

.mode-btn[data-mode="expert"]:hover {
  background-color: #c53030;
}

/* 自定义选项样式 */
.custom-options {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 30px;
}

.option-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px;
  border-radius: var(--border-radius);
  background-color: rgba(0, 0, 0, 0.02);
  transition: var(--transition);
}

.option-group label {
  font-weight: 600;
  color: var(--text-primary);
  min-width: 120px;
}

.option-group input[type="number"],
.option-group input[type="range"],
.option-group select {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: var(--background-color);
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
}

.option-group input[type="range"] {
  flex: 1;
  margin: 0 15px;
}

.option-group input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
}

/* 游戏界面样式 */
.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 15px;
}

.game-info {
  display: flex;
  gap: 25px;
  flex-wrap: wrap;
}

.timer,
.mines-counter,
.moves-counter {
  background-color: #2d3748;
  color: #e53e3e;
  padding: 10px 15px;
  border-radius: var(--border-radius);
  font-family: "Courier New", monospace;
  font-size: 1.2rem;
  font-weight: bold;
  min-width: 120px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.label {
  color: white;
  font-size: 0.9rem;
  font-weight: normal;
  font-family: var(--font-family);
}

.game-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.control-btn {
  padding: 8px 16px;
  font-size: 0.9rem;
}

/* 游戏棋盘样式 */
.game-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 20px 0;
  overflow-x: auto;
  background-color: var(--grid-border);
  border-radius: var(--border-radius);
  padding: 10px;
  box-shadow: var(--box-shadow);
}

.game-board {
  display: inline-grid;
  gap: 1px;
  background-color: var(--grid-border);
  padding: 5px;
  border-radius: calc(var(--border-radius) - 5px);
  position: relative;
  transition: filter 0.3s ease;
}

/* 游戏状态时棋盘样式 */
.game-board.game-over,
.game-board.paused {
  filter: blur(2px);
  opacity: 0.7;
  transition: filter 0.3s ease, opacity 0.3s ease;
}

/* 内联游戏结束详情区域 */
.game-over-info {
  position: relative;
  background: var(--card-background);
  border-radius: var(--border-radius);
  padding: 25px;
  margin-top: 20px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  animation: slideUp 0.4s ease-out;
  border: 2px solid var(--danger-color);
}

/* 内联暂停信息区域 */
.pause-info {
  position: relative;
  background: var(--card-background);
  border-radius: var(--border-radius);
  padding: 25px;
  margin-top: 20px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  animation: slideUp 0.4s ease-out;
  border: 2px solid var(--warning-color);
  text-align: center;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.game-over-header {
  text-align: center;
  margin-bottom: 20px;
}

#inline-game-over-title,
.pause-header h2 {
  font-size: 1.8rem;
  margin-bottom: 10px;
}

#inline-game-over-title {
  color: var(--danger-color);
}

.pause-header h2 {
  color: var(--warning-color);
}

#inline-game-over-message {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.game-stats {
  display: flex;
  justify-content: space-around;
  background: var(--background-color);
  border-radius: var(--border-radius);
  padding: 15px;
  margin-bottom: 20px;
}

.game-details {
  background: rgba(0, 0, 0, 0.05);
  border-radius: 8px;
  padding: 15px;
  margin-bottom: 20px;
  line-height: 1.6;
}

.action-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
}

.cell {
  width: 30px;
  height: 30px;
  background-color: var(--cell-background);
  border: 2px solid;
  border-color: #ffffff #7b7b7b #7b7b7b #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.cell:hover:not(.revealed):not(.flagged) {
  background-color: var(--cell-hover);
}

.cell:active:not(.revealed):not(.flagged) {
  background-color: var(--cell-active);
  border-color: #7b7b7b #ffffff #ffffff #7b7b7b;
}

.cell.revealed {
  background-color: #f0f0f0;
  border: 1px solid var(--grid-border);
  cursor: default;
}

.cell.flagged {
  background-color: var(--cell-background);
  font-size: 1.2rem;
}

.cell.mine {
  background-color: var(--danger-color);
  color: white;
}

.cell.mine.hit {
  animation: explode 0.5s ease-out;
}

.cell.question {
  font-size: 1.2rem;
  color: var(--primary-color);
}

/* 数字颜色 */
.cell.number-1 {
  color: #0000ff;
}
.cell.number-2 {
  color: #008000;
}
.cell.number-3 {
  color: #ff0000;
}
.cell.number-4 {
  color: #000080;
}
.cell.number-5 {
  color: #800000;
}
.cell.number-6 {
  color: #008080;
}
.cell.number-7 {
  color: #000000;
}
.cell.number-8 {
  color: #808080;
}

/* 覆盖层样式 */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  animation: fadeIn 0.3s ease-out;
}

.pause-content,
.game-over-content,
.rules-content,
.settings-content,
.special-items-content {
  background-color: var(--card-background);
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  max-width: 500px;
  width: 90%;
  text-align: center;
  animation: slideIn 0.3s ease-out;
}

/* 统计信息样式 */
.stats-summary {
  display: flex;
  justify-content: space-around;
  margin: 30px 0;
  flex-wrap: wrap;
  gap: 15px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 100px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

/* 特殊道具样式 */
.items-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 30px;
}

.item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px;
  border-radius: var(--border-radius);
  background-color: rgba(0, 0, 0, 0.02);
  transition: var(--transition);
}

.item:hover {
  background-color: rgba(0, 0, 0, 0.05);
  transform: translateX(5px);
}

.item-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--secondary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: bold;
}

.item-info {
  flex: 1;
  text-align: left;
}

.item-info h3 {
  margin: 0 0 5px 0;
  font-size: 1.1rem;
}

.item-info p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.item-count {
  font-weight: bold;
  color: var(--accent-color);
}

.use-item-btn {
  padding: 8px 16px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
}

.use-item-btn:hover {
  background-color: var(--secondary-color);
}

/* 规则文本样式 */
.rules-text {
  text-align: left;
  max-height: 400px;
  overflow-y: auto;
  margin-bottom: 25px;
  padding-right: 10px;
}

.rules-text ul {
  margin-left: 20px;
  margin-bottom: 20px;
}

.rules-text li {
  margin-bottom: 8px;
  color: var(--text-secondary);
}

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

.button-group {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

/* 动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes explode {
  0% {
    transform: scale(1);
    background-color: var(--danger-color);
  }
  50% {
    transform: scale(1.2);
    background-color: #f56565;
  }
  100% {
    transform: scale(1);
    background-color: var(--danger-color);
  }
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.cell.revealed {
  animation: reveal 0.2s ease-out;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .screen {
    padding: 25px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .game-header {
    flex-direction: column;
    align-items: stretch;
  }

  .game-info {
    justify-content: center;
  }

  .cell {
    width: 25px;
    height: 25px;
    font-size: 0.9rem;
  }

  .pause-content,
  .game-over-content,
  .rules-content,
  .settings-content,
  .special-items-content {
    padding: 30px 20px;
  }

  .option-group {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 10px;
  }

  .screen {
    padding: 20px 15px;
  }

  .mode-btn,
  .challenge-btn {
    padding: 12px;
    font-size: 1rem;
  }

  .cell {
    width: 20px;
    height: 20px;
    font-size: 0.8rem;
  }

  .stats-summary {
    flex-direction: column;
    align-items: center;
  }

  .stat-item {
    flex-direction: row;
    justify-content: space-between;
    min-width: 100%;
  }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--background-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--secondary-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}