/* ============================================
   消防小游戏 — 共享样式表
   暗色主题 · 火焰橙红 · 水蓝渐变 · 微动效
   ============================================ */

/* ---------- 自定义属性（主题色） ---------- */
:root {
  --color-bg: #0a0e17;
  --color-bg-card: #141b2d;
  --color-bg-card-hover: #1c2640;
  --color-primary: #ff6b35;
  --color-primary-hover: #ff8c5a;
  --color-secondary: #00b4d8;
  --color-secondary-hover: #48cae4;
  --color-accent: #ffd166;
  --color-danger: #ef233c;
  --color-success: #06d6a0;
  --color-fire: #ff4500;
  --color-water: #00b4d8;
  --color-text: #e8e8e8;
  --color-text-dim: #9aa0b0;
  --color-border: #2a3350;
  --color-glow: rgba(255, 107, 53, 0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px rgba(255, 107, 53, 0.15);
  --transition: 0.25s ease;
}

/* ---------- 全局重置 ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background: linear-gradient(135deg, #0a0e17 0%, #141b2d 50%, #0d1117 100%);
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 导航栏 ---------- */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.navbar-links {
  display: flex;
  gap: 8px;
  list-style: none;
}

.navbar-links a {
  color: var(--color-text-dim);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: background var(--transition), color var(--transition);
}

.navbar-links a:hover,
.navbar-links a.active {
  background: rgba(255, 107, 53, 0.12);
  color: var(--color-primary);
}

/* ---------- 标题 ---------- */
h1, h2, h3 {
  font-weight: 700;
  line-height: 1.3;
}

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

/* ---------- 卡片 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  padding: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform var(--transition), box-shadow var(--transition),
              border-color var(--transition);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-primary);
}

.card:hover::before {
  opacity: 1;
}

.card:active {
  transform: translateY(-1px);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
  display: block;
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

.card p {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  line-height: 1.5;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition),
              background var(--transition);
  text-decoration: none;
  color: #fff;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #e85d04);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-hover), #ff6b35);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--color-secondary), #0077b6);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--color-secondary-hover), #00b4d8);
}

.btn-danger {
  background: linear-gradient(135deg, var(--color-danger), #c1121f);
}

.btn-success {
  background: linear-gradient(135deg, var(--color-success), #06a77d);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ---------- 容器 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.section-title {
  font-size: 1.5rem;
  margin-bottom: 20px;
  text-align: center;
}

/* ---------- 游戏页面通用 ---------- */
.game-area {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 20px;
}

canvas {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 100%;
}

.game-hud {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  width: 100%;
  max-width: 800px;
}

.hud-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 18px;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hud-item .label {
  color: var(--color-text-dim);
}

.hud-item .value {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.1rem;
}

/* ---------- 提示/弹窗 ---------- */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 12px 24px;
  font-size: 0.95rem;
  z-index: 200;
  box-shadow: var(--shadow);
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  border-color: var(--color-success);
}

.toast.error {
  border-color: var(--color-danger);
}

/* ---------- 模态框 ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 420px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow);
}

.modal-box h2 {
  margin-bottom: 12px;
}

.modal-box p {
  color: var(--color-text-dim);
  margin-bottom: 20px;
}

.modal-box .btn {
  margin: 4px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .navbar {
    padding: 10px 16px;
    flex-direction: column;
    gap: 8px;
  }

  .navbar-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .card-grid {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  .container {
    padding: 16px;
  }

  .game-hud {
    gap: 12px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .card {
    padding: 18px;
  }

  .btn {
    padding: 8px 18px;
    font-size: 0.85rem;
  }
}

/* ---------- 工具类 ---------- */
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2 { gap: 16px; }