/* ==================== 滚动入场动画 ==================== */

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }

/* ==================== Hero 动画 ==================== */

.hero-title,
.hero-motd-wrap,
.hero-stats,
.hero-address {
  opacity: 0;
  transform: translateY(20px);
}

.hero-content.ready .hero-title {
  animation: heroFadeIn 0.8s ease forwards, heroShimmer 4s ease 1.2s infinite;
  background: linear-gradient(90deg, var(--hero-text) 0%, var(--hero-text) 35%, var(--hero-text-muted) 50%, var(--hero-text) 65%, var(--hero-text) 100%);
  background-size: 300% 100%;
  background-position: 100% 0;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@keyframes heroShimmer {
  0% { background-position: 100% 0; }
  100% { background-position: 0% 0; }
}

.hero-title.no-shimmer {
  animation: heroFadeIn 0.8s ease forwards !important;
  background: none !important;
  -webkit-text-fill-color: unset !important;
  color: var(--hero-text);
}

.hero-content.ready .hero-motd-wrap {
  animation: heroFadeIn 0.8s ease 0.15s forwards;
}

.hero-content.ready .hero-stats {
  animation: heroFadeIn 0.8s ease 0.3s forwards;
}

.hero-content.ready .hero-address {
  animation: heroFadeIn 0.8s ease 0.45s forwards;
}

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

/* ==================== 悬停效果 ==================== */

.gallery-item {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.news-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.news-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.status-card {
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.status-card:hover {
  background: var(--bg-card);
}

/* ==================== 导航动画 ==================== */

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ==================== 脉冲动画（状态指示） ==================== */

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.7; }
}

.status-dot {
  animation: pulse 2s ease-in-out infinite;
}