/* ============================================================
   CloudEngine - 组件样式
   ============================================================ */

/* —— 顶部导航 —— */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-height);
  display: flex; align-items: center;
  background: transparent;
  transition: height var(--transition-base), background var(--transition-base), backdrop-filter var(--transition-base);
}
.site-header.scrolled {
  height: var(--header-height-scrolled);
  background: rgba(10, 14, 39, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; font-size: var(--fs-xl); font-weight: 800; letter-spacing: 0.5px; }
.logo-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--gradient-primary);
  display: grid; place-items: center;
  box-shadow: var(--shadow-glow);
  position: relative; overflow: hidden;
}
.logo-mark::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.4) 50%, transparent 60%);
  animation: shine 3s infinite;
}
.logo-text { background: var(--gradient-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.nav-menu { display: flex; align-items: center; gap: var(--space-lg); }
.nav-menu a {
  position: relative; font-size: var(--fs-sm); font-weight: 500;
  color: var(--color-text-muted); transition: color var(--transition-base);
  padding: 6px 0;
}
.nav-menu a::after {
  content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 2px;
  background: var(--gradient-primary); transition: width var(--transition-base);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--color-text-strong); }
.nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; }

.nav-cta { display: flex; align-items: center; gap: var(--space-md); }

/* —— 按钮 —— */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; font-size: var(--fs-sm); font-weight: 600;
  border-radius: var(--radius-sm); cursor: pointer;
  transition: all var(--transition-base); position: relative; overflow: hidden;
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient-primary); color: #fff;
  box-shadow: 0 4px 16px rgba(0, 102, 255, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 102, 255, 0.6); }
.btn-primary::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
  transform: translateX(-100%); transition: transform 0.6s var(--ease-out);
}
.btn-primary:hover::after { transform: translateX(100%); }
.btn-outline {
  background: transparent; color: var(--color-text-strong);
  border: 1px solid var(--color-border-strong);
}
.btn-outline:hover { background: rgba(0, 212, 255, 0.1); border-color: var(--color-accent); transform: translateY(-2px); }
.btn-ghost { background: var(--color-bg-card); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-ghost:hover { background: var(--color-bg-card-hover); border-color: var(--color-border-strong); }
.btn-lg { padding: 16px 36px; font-size: var(--fs-base); }
.btn-sm { padding: 8px 18px; font-size: var(--fs-xs); }

/* —— 玻璃拟态卡片 —— */
.glass-card {
  background: var(--color-bg-glass);
  backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-slow);
  position: relative; overflow: hidden;
}
.glass-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: var(--gradient-border); opacity: 0.6;
}
.glass-card:hover {
  border-color: var(--color-border-strong);
  background: rgba(19, 24, 54, 0.8);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* —— 通用卡片 —— */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}
.card:hover { border-color: var(--color-border-strong); transform: translateY(-4px); box-shadow: var(--shadow-md); }

/* —— 区块标题 —— */
.section { padding: var(--space-3xl) 0; position: relative; }
.section-header { text-align: center; margin-bottom: var(--space-2xl); }
.section-eyebrow {
  display: inline-block; font-size: var(--fs-xs); font-weight: 600; letter-spacing: 2px;
  text-transform: uppercase; color: var(--color-accent);
  padding: 6px 16px; border-radius: var(--radius-full);
  background: rgba(0, 212, 255, 0.08); border: 1px solid rgba(0, 212, 255, 0.2);
  margin-bottom: var(--space-md);
}
.section-title { font-size: var(--fs-4xl); font-weight: 800; margin-bottom: var(--space-md); }
.section-subtitle { font-size: var(--fs-lg); color: var(--color-text-muted); max-width: 640px; margin: 0 auto; }

/* —— 网格 —— */
.grid { display: grid; gap: var(--space-lg); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1199px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 767px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* —— 面包屑 —— */
.breadcrumb {
  padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-lg);
  font-size: var(--fs-sm); color: var(--color-text-muted);
}
.breadcrumb a { color: var(--color-text-muted); transition: color var(--transition-base); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span { margin: 0 8px; color: var(--color-text-dim); }
.breadcrumb .current { color: var(--color-text); }

/* —— 标签 —— */
.tag {
  display: inline-block; padding: 4px 12px; font-size: var(--fs-xs); font-weight: 500;
  border-radius: var(--radius-full); background: rgba(0, 212, 255, 0.1);
  color: var(--color-accent); border: 1px solid rgba(0, 212, 255, 0.2);
}
.tag-purple { background: rgba(124, 58, 237, 0.1); color: var(--color-secondary); border-color: rgba(124, 58, 237, 0.2); }

/* —— Footer —— */
.site-footer {
  background: var(--color-bg-darker); border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0 var(--space-lg);
  position: relative; overflow: hidden;
}
.site-footer::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: var(--gradient-border); opacity: 0.5;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-2xl); margin-bottom: var(--space-2xl); }
@media (max-width: 767px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); } }
.footer-col h4 { font-size: var(--fs-base); margin-bottom: var(--space-md); color: var(--color-text-strong); }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--color-text-muted); font-size: var(--fs-sm); transition: color var(--transition-base); }
.footer-col ul li a:hover { color: var(--color-accent); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: var(--space-lg); border-top: 1px solid var(--color-border);
  font-size: var(--fs-xs); color: var(--color-text-dim);
}
@media (max-width: 767px) { .footer-bottom { flex-direction: column; gap: var(--space-sm); text-align: center; } }

/* —— 移动端菜单按钮 —— */
.menu-toggle { display: none; width: 40px; height: 40px; flex-direction: column; justify-content: center; gap: 5px; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: var(--color-text); transition: all var(--transition-base); margin: 0 auto; }
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 767px) {
  .menu-toggle { display: flex; }
  .nav-menu {
    position: fixed; top: var(--header-height); left: 0; right: 0; bottom: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: rgba(10, 14, 39, 0.98); backdrop-filter: blur(20px);
    padding: var(--space-lg); transform: translateX(100%); transition: transform var(--transition-base);
  }
  .nav-menu.open { transform: translateX(0); }
  .nav-menu a { width: 100%; padding: 16px 0; border-bottom: 1px solid var(--color-border); }
  .nav-cta .btn:not(.btn-primary) { display: none; }
}

/* —— 悬浮客服 —— */
.float-consult {
  position: fixed; right: 24px; bottom: 24px; z-index: 900;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--gradient-primary); display: grid; place-items: center;
  box-shadow: var(--shadow-glow-strong); cursor: pointer;
  transition: transform var(--transition-base);
}
.float-consult:hover { transform: scale(1.1); }
.float-consult::before {
  content: ''; position: absolute; inset: -4px; border-radius: 50%;
  border: 2px solid var(--color-accent); animation: pulse-ring 2s infinite;
}

/* —— 分页器 —— */
.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: var(--space-2xl); }
.pagination button {
  min-width: 40px; height: 40px; padding: 0 12px; border-radius: var(--radius-sm);
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  color: var(--color-text-muted); font-size: var(--fs-sm); transition: all var(--transition-base);
}
.pagination button:hover { border-color: var(--color-border-strong); color: var(--color-text); }
.pagination button.active { background: var(--gradient-primary); color: #fff; border-color: transparent; }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }