/* ===== 全局变量 ===== */
:root {
  --bg: #F7FAFC;
  --surface: #FFFFFF;
  --text: #1A202C;
  --text-muted: #718096;
  --primary: #3182CE;
  --primary-hover: #2B6CB0;
  --success: #38A169;
  --danger: #E53E3E;
  --warning: #D69E2E;
  --border: #E2E8F0;
  --shadow: 0 4px 6px rgba(0,0,0,0.07);
  --radius: 12px;
  --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; }

/* ===== 首页布局 ===== */
.home-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 40px 20px;
}

.home-header {
  text-align: center;
  margin-bottom: 36px;
}

.home-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.home-header p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* ===== 菜单卡片网格 ===== */
.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  width: 100%;
  max-width: 800px;
}

.menu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.menu-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.menu-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.menu-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.menu-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ===== 游戏页通用布局 ===== */
.game-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.game-header h2 {
  font-size: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.2s, border-color 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-hover); }

.btn-secondary {
  background: #EDF2F7;
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover { background: #E2E8F0; }

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover { background: #C53030; }

.btn-success {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}
.btn-success:hover { background: #2F855A; }

.game-body {
  flex: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ===== 配置面板 ===== */
.config-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 480px;
  margin-bottom: 20px;
}

.config-row {
  margin-bottom: 16px;
}

.config-row label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.option-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.option-btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.15s;
}

.option-btn:hover {
  border-color: var(--primary);
}

.option-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

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

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  cursor: pointer;
}

.checkbox-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

/* ===== 数字输入 ===== */
.number-input {
  width: 80px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  text-align: center;
}

.number-input:focus {
  outline: none;
  border-color: var(--primary);
}

/* ===== 提示区域 ===== */
.status-bar {
  display: flex;
  gap: 20px;
  align-items: center;
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.status-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-label {
  color: var(--text-muted);
}

.status-value {
  font-weight: 600;
}

/* ===== 动画 ===== */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.shake {
  animation: shake 0.3s ease-in-out;
}

@keyframes pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

.pop {
  animation: pop 0.2s ease-out;
}

/* ===== 响应式 ===== */
@media (max-width: 480px) {
  .home-header h1 {
    font-size: 1.5rem;
  }
  .menu-grid {
    grid-template-columns: 1fr;
  }
  .game-header {
    padding: 10px 12px;
  }
  .game-header h2 {
    font-size: 1rem;
  }
}