/* 失落的城市 (Lost Cities) 探险家遗迹主题 - 全局样式系统 */
:root {
  --lc-bg-main: #14171a;
  --lc-bg-card: rgba(28, 33, 40, 0.92);
  --lc-border: rgba(212, 175, 55, 0.25);
  --lc-border-highlight: #d4af37;
  
  --lc-gold: #f1c40f;
  --lc-text-primary: #f0e6d2;
  --lc-text-muted: #9aa0a6;

  /* 5 大远征路线专属色彩 */
  --route-yellow: #f39c12; /* 埃及金字塔 */
  --route-blue: #2980b9;   /* 海底亚特兰蒂斯 */
  --route-white: #ecf0f1;  /* 喜马拉雅雪山 */
  --route-green: #27ae60;  /* 热带雨林 */
  --route-red: #c0392b;    /* 火山沙漠 */
}

/* 失落的城市 核心应用容器 */
#lost-cities-game-app {
  min-height: 100vh;
  background: radial-gradient(circle at 50% 30%, #1e242d 0%, #0f1216 90%);
  color: var(--lc-text-primary);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Georgia, serif;
}

/* 顶部 Header */
.lc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1.8rem;
  background: rgba(20, 23, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--lc-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.lc-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--lc-gold);
}

.lc-brand .lc-logo {
  font-size: 1.6rem;
}

.lc-nav-tabs {
  display: flex;
  gap: 0.5rem;
}

.lc-nav-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--lc-text-muted);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s;
}

.lc-nav-btn:hover {
  color: var(--lc-text-primary);
  background: rgba(212, 175, 55, 0.1);
}

.lc-nav-btn.active {
  color: #14171a;
  background: var(--lc-gold);
  border-color: var(--lc-gold);
  box-shadow: 0 0 12px rgba(241, 196, 15, 0.4);
}

.lc-header-actions {
  display: flex;
  gap: 0.6rem;
}

.lc-btn-tool {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--lc-text-primary);
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.lc-btn-tool:hover {
  background: rgba(212, 175, 55, 0.2);
  border-color: var(--lc-gold);
}

/* 主内容容器 */
.lc-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* 卡牌基础外观样式 (古朴羊皮纸遗迹风格) */
.lc-card {
  width: 76px;
  height: 114px;
  border-radius: 8px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 6px;
  box-sizing: border-box;
  font-weight: 800;
  position: relative;
  user-select: none;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
  transition: transform 0.2s, box-shadow 0.2s;
  background-size: cover;
}

.lc-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.7);
}

.lc-card.yellow {
  background: linear-gradient(135deg, #f39c12 0%, #d35400 100%);
  color: #fff;
  border-color: #f1c40f;
}

.lc-card.blue {
  background: linear-gradient(135deg, #2980b9 0%, #1a5276 100%);
  color: #fff;
  border-color: #3498db;
}

.lc-card.white {
  background: linear-gradient(135deg, #ffffff 0%, #bdc3c7 100%);
  color: #2c3e50;
  border-color: #ffffff;
}

.lc-card.green {
  background: linear-gradient(135deg, #27ae60 0%, #196f3d 100%);
  color: #fff;
  border-color: #2ecc71;
}

.lc-card.red {
  background: linear-gradient(135deg, #c0392b 0%, #7b241c 100%);
  color: #fff;
  border-color: #e74c3c;
}

.lc-card .card-value {
  font-size: 1.3rem;
  line-height: 1;
}

.lc-card .card-symbol {
  font-size: 1.4rem;
  align-self: center;
}

.lc-card .card-investment-label {
  font-size: 0.75rem;
  text-align: center;
  background: rgba(0, 0, 0, 0.35);
  border-radius: 4px;
  padding: 2px 0;
  letter-spacing: 1px;
}

/* 通用玻璃面板 */
.lc-glass-card {
  background: var(--lc-bg-card);
  border: 1px solid var(--lc-border);
  border-radius: 16px;
  padding: 1.8rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  margin-bottom: 2rem;
}