/* 游戏选择大厅 (Board Game Portal) 样式表 */
:root {
  --portal-bg: #0d1117;
  --portal-card-bg: rgba(22, 27, 34, 0.85);
  --portal-card-border: rgba(255, 255, 255, 0.12);
  --portal-card-hover: rgba(255, 255, 255, 0.22);
  --portal-accent-gold: #f39c12;
  --portal-accent-cyan: #00d2ff;
  --portal-text-main: #f0f6fc;
  --portal-text-muted: #8b949e;
}

#game-portal-container {
  min-height: 100vh;
  background: radial-gradient(circle at 50% 20%, #1a2332 0%, #0d1117 80%);
  color: var(--portal-text-main);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2.5rem 1.5rem 4rem;
  box-sizing: border-box;
}

.portal-hero {
  text-align: center;
  max-width: 800px;
  margin-bottom: 3.5rem;
  animation: fadeInDown 0.8s ease-out;
}

.portal-title-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(243, 156, 18, 0.15);
  border: 1px solid rgba(243, 156, 18, 0.4);
  border-radius: 50px;
  color: var(--portal-accent-gold);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
  letter-spacing: 0.05em;
}

.portal-main-title {
  font-size: 2.8rem;
  font-weight: 800;
  margin: 0 0 1rem 0;
  background: linear-gradient(135deg, #ffffff 0%, #d4af37 50%, #00d2ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.portal-subtitle {
  font-size: 1.15rem;
  color: var(--portal-text-muted);
  line-height: 1.6;
  margin: 0;
}

/* 游戏选择卡牌容器 */
.portal-games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 460px));
  gap: 2rem;
  width: 100%;
  max-width: 1020px;
  justify-content: center;
}

.game-portal-card {
  background: var(--portal-card-bg);
  border: 1px solid var(--portal-card-border);
  border-radius: 20px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.35s, box-shadow 0.35s;
  cursor: pointer;
}

.game-portal-card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: var(--card-theme-color, var(--portal-accent-gold));
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 25px var(--card-glow-color, rgba(243, 156, 18, 0.3));
}

.card-banner-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  display: inline-block;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.5));
  transition: transform 0.3s;
}

.game-portal-card:hover .card-banner-icon {
  transform: scale(1.1) rotate(-4deg);
}

.card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.8rem;
}

.tag-badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.08);
  color: var(--portal-text-main);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.tag-badge.badge-hot {
  background: rgba(231, 76, 60, 0.2);
  color: #ff6b6b;
  border-color: rgba(231, 76, 60, 0.4);
}

.tag-badge.badge-classic {
  background: rgba(212, 175, 55, 0.2);
  color: #f1c40f;
  border-color: rgba(212, 175, 55, 0.4);
}

.game-card-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  color: #ffffff;
}

.game-card-info {
  display: flex;
  gap: 1.2rem;
  font-size: 0.85rem;
  color: var(--portal-accent-gold);
  margin-bottom: 1rem;
}

.game-card-desc {
  font-size: 0.95rem;
  color: var(--portal-text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.game-card-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.8rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.game-card-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #d0d7de;
}

.game-card-features li::before {
  content: "✦";
  color: var(--card-theme-color, var(--portal-accent-gold));
  font-size: 0.8rem;
}

.btn-enter-game {
  width: 100%;
  padding: 0.9rem 1.5rem;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, var(--card-theme-color, #f39c12) 0%, #161b22 180%);
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  transition: background 0.3s, filter 0.3s, transform 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-enter-game:hover {
  filter: brightness(1.2);
  transform: translateY(-2px);
}

.portal-footer {
  margin-top: auto;
  padding-top: 3rem;
  font-size: 0.85rem;
  color: var(--portal-text-muted);
  text-align: center;
}

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