/* ============================================
   地震问答助手 — 共享样式
   暗色警示 · 橙色高亮 · 微动效 · 卡片化
   ============================================ */

/* --- CSS 自定义属性（主题色） --- */
:root {
  --color-bg: #0d0f1a;
  --color-bg-card: #1a1d2e;
  --color-bg-card-hover: #22263b;
  --color-primary: #f97316;
  --color-primary-hover: #ea580c;
  --color-primary-glow: rgba(249, 115, 22, 0.3);
  --color-success: #22c55e;
  --color-danger: #ef4444;
  --color-warning: #eab308;
  --color-text: #e2e8f0;
  --color-text-dim: #94a3b8;
  --color-text-muted: #64748b;
  --color-border: #2d3154;
  --color-shield: #22c55e;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px var(--color-primary-glow);
  --transition: 0.25s ease;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: linear-gradient(135deg, var(--color-bg) 0%, #141829 50%, #0b0e1a 100%);
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
  padding: 20px;
}

/* --- 标题渐变文字 --- */
h1, h2, h3 {
  background: linear-gradient(135deg, var(--color-primary), #fb923c);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.3;
}

h1 { font-size: 2rem; margin-bottom: 0.5rem; }
h2 { font-size: 1.5rem; margin-bottom: 0.4rem; }
h3 { font-size: 1.2rem; margin-bottom: 0.3rem; }

/* --- 卡片 --- */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
}

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  color: #fff;
  background: var(--color-primary);
  box-shadow: 0 2px 10px var(--color-primary-glow);
}

.btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--color-primary-glow);
}

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

.btn--secondary {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  box-shadow: none;
}

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

.btn--success {
  background: var(--color-success);
  box-shadow: 0 2px 10px rgba(34, 197, 94, 0.3);
}

.btn--success:hover {
  background: #16a34a;
}

.btn--danger {
  background: var(--color-danger);
  box-shadow: 0 2px 10px rgba(239, 68, 68, 0.3);
}

.btn--danger:hover {
  background: #dc2626;
}

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

/* --- 导航栏 --- */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 12px;
}

.navbar__title {
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), #fb923c);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.navbar__links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.navbar__link {
  color: var(--color-text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}

.navbar__link:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.navbar__link--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* --- 首页入口卡片网格 --- */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.entry-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  overflow: hidden;
}

.entry-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition);
}

.entry-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  border-color: var(--color-primary);
}

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

.entry-card__icon {
  font-size: 2.2rem;
}

.entry-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), #fb923c);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

/* --- 倒计时 / 状态条 --- */
.countdown-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-danger);
  animation: pulse-danger 1s ease-in-out infinite;
}

@keyframes pulse-danger {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* --- 安全盾牌动画 --- */
.shield {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.2);
  border: 3px solid var(--color-shield);
  font-size: 1.8rem;
  animation: shield-appear 0.5s ease-out;
}

@keyframes shield-appear {
  0% { transform: scale(0); opacity: 0; }
  60% { transform: scale(1.2); }
  100% { transform: scale(1); opacity: 1; }
}

/* --- 家具倒下动画 --- */
@keyframes fall-down {
  0% { transform: rotate(0deg) scale(1); opacity: 1; }
  100% { transform: rotate(90deg) scale(0.8); opacity: 0.5; }
}

.furniture-fall {
  animation: fall-down 0.6s ease-in forwards;
}

/* --- 安全区呼吸动画 --- */
@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.breathe-safe {
  animation: breathe 2s ease-in-out infinite;
}

/* --- 绿色安全提示 --- */
.safe-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid var(--color-success);
  border-radius: 20px;
  color: var(--color-success);
  font-weight: 600;
  font-size: 0.9rem;
}

/* --- 红色危险提示 --- */
.danger-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid var(--color-danger);
  border-radius: 20px;
  color: var(--color-danger);
  font-weight: 600;
  font-size: 0.9rem;
}

/* --- 勋章 --- */
.medal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  font-size: 2.2rem;
  box-shadow: 0 0 20px rgba(251, 191, 36, 0.4);
  animation: medal-pop 0.6s ease-out;
}

@keyframes medal-pop {
  0% { transform: scale(0) rotate(-180deg); opacity: 0; }
  60% { transform: scale(1.2) rotate(10deg); }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

/* --- 选项按钮（问答用） --- */
.option-btn {
  display: block;
  width: 100%;
  padding: 14px 20px;
  margin-bottom: 10px;
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 1rem;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition);
}

.option-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-card-hover);
  transform: translateX(4px);
}

.option-btn--correct {
  border-color: var(--color-success) !important;
  background: rgba(34, 197, 94, 0.15) !important;
}

.option-btn--wrong {
  border-color: var(--color-danger) !important;
  background: rgba(239, 68, 68, 0.15) !important;
  animation: shake 0.4s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  50% { transform: translateX(8px); }
  75% { transform: translateX(-4px); }
}

/* --- 进度条 --- */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 20px;
}

.progress-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #fb923c);
  border-radius: 4px;
  transition: width 0.5s ease;
}

/* --- 总结卡 --- */
.result-card {
  text-align: center;
  padding: 40px 24px;
}

.result-card__icon {
  font-size: 4rem;
  margin-bottom: 16px;
}

.result-card__warning {
  font-size: 1.1rem;
  color: var(--color-warning);
  font-style: italic;
  margin-top: 12px;
}

/* --- 躲藏区域（点击互动） --- */
.hide-zone {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 20px 0;
}

.hide-spot {
  padding: 20px;
  background: var(--color-bg-card);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-sm);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  font-size: 0.9rem;
  color: var(--color-text-dim);
}

.hide-spot:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-card-hover);
}

.hide-spot--correct {
  border-color: var(--color-success) !important;
  background: rgba(34, 197, 94, 0.15) !important;
  color: var(--color-success) !important;
}

.hide-spot--wrong {
  border-color: var(--color-danger) !important;
  background: rgba(239, 68, 68, 0.15) !important;
  color: var(--color-danger) !important;
}

/* --- 救援人员动画 --- */
@keyframes wave-hand {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-15deg); }
  75% { transform: rotate(15deg); }
}

.rescue-wave {
  display: inline-block;
  font-size: 3rem;
  animation: wave-hand 1s ease-in-out infinite;
}

/* --- 逃生成功动画 --- */
@keyframes success-zoom {
  0% { transform: scale(0.3); opacity: 0; }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}

.success-title {
  font-size: 2.5rem;
  font-weight: 900;
  animation: success-zoom 1s ease-out;
  background: linear-gradient(135deg, #22c55e, #16a34a, #f97316);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* --- 冷知识彩蛋 --- */
.egg-card {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.1), rgba(34, 197, 94, 0.1));
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 20px;
  margin: 16px 0;
  animation: egg-glow 2s ease-in-out infinite;
}

@keyframes egg-glow {
  0%, 100% { box-shadow: 0 0 10px rgba(249, 115, 22, 0.2); }
  50% { box-shadow: 0 0 20px rgba(249, 115, 22, 0.4); }
}

/* --- 响应式 --- */
@media (max-width: 600px) {
  body { padding: 12px; }
  h1 { font-size: 1.5rem; }
  .grid-cards { grid-template-columns: 1fr; }
  .navbar { flex-direction: column; align-items: flex-start; }
  .hide-zone { grid-template-columns: repeat(2, 1fr); }
  .result-card { padding: 24px 16px; }
}

/* --- 工具类 --- */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }