/* ============================================================
   Puchuan — component-header.css
   顶部导航（亮色玻璃效果）— 由 layout 全局引入
   ============================================================ */

.pc-header {
  position: sticky;
  top: 0;
  z-index: 50;
}

.glass-header {
  background: var(--color-glass-background);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-header);
}

.pc-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* 品牌 Logo */
.pc-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

/* 品牌 Logo 容器：内嵌 snippets/brand-mark.liquid（「川」三笔，透明底，扁平双色）
   v1.3.0 起为无底板标志；容器宽度即图形宽度，高度按 viewBox 比例自适应 */
.pc-logo-mark {
  flex: none;
  display: flex;
  align-items: center;
}

.pc-logo-mark svg {
  display: block;
  width: 38px;
  height: auto;
}

.pc-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.pc-logo-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
}

.pc-logo-en {
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.18em;
}

/* 导航链接 */
.pc-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.pc-nav-link {
  padding: 8px 16px;
  border-radius: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s, background-color 0.2s;
}

.pc-nav-link:hover {
  color: var(--color-primary-700);
  background: var(--color-primary-tint-8);
}

.pc-nav-link.is-active {
  color: var(--color-primary-700);
  background: var(--color-primary-tint-10);
  font-weight: 600;
}

.pc-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* CTA 按钮 */
.pc-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 999px;
  /* 蓝青渐变（规范 §5.1 登记值） */
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  color: var(--color-on-primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow-glow-cta);
  transition: transform 0.2s, box-shadow 0.2s;
}

.pc-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow-cta-lg);
}

/* 汉堡按钮 */
.pc-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: 1px solid var(--color-card-border);
  border-radius: 0.75rem;
  /* 玻璃白底（令牌未覆盖，保留原值） */
  background: rgba(255, 255, 255, 0.6);
  cursor: pointer;
}

.pc-hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.pc-hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.pc-hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.pc-hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端菜单 */
.pc-mobile-menu {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding: 8px 16px 16px;
  border-top: 1px solid var(--color-card-border);
  /* 玻璃白底（令牌未覆盖，保留原值） */
  background: rgba(255, 255, 255, 0.92);
}

.pc-mobile-menu.open {
  display: flex;
}

.pc-mobile-menu .pc-nav-link {
  padding: 12px;
}

@media (max-width: 767px) {
  .pc-nav {
    display: none;
  }

  .pc-hamburger {
    display: flex;
  }

  .pc-cta {
    padding: 9px 16px;
    font-size: 0.8125rem;
  }
}

/* 减少动态偏好：关闭过渡与 hover 位移，直显终态（规范 §7.4） */
@media (prefers-reduced-motion: reduce) {
  .pc-nav-link,
  .pc-cta,
  .pc-hamburger span {
    transition: none;
  }

  .pc-cta:hover {
    transform: none;
  }
}