/* nav.css - 导航+面包屑+分页（全局加载） */

/* ===== 顶部导航栏 ===== */
.site-header {
  background: var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(26,15,46,0.3);
}
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.site-logo {
  color: var(--white);
  font-size: 1.15em;
  font-weight: 600;
  white-space: nowrap;
}
.site-logo a { color: var(--white); }
.site-logo a:hover { color: var(--secondary); }

/* 主导航 */
.main-nav ul {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 4px;
}
.main-nav li { margin: 0; }
.main-nav a {
  display: block;
  padding: 10px 16px;
  color: rgba(255,255,255,0.85);
  font-size: 0.95em;
  border-radius: var(--radius);
  transition: all 0.3s;
  white-space: nowrap;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--white);
  background: rgba(0,191,165,0.2);
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s;
}

@media (max-width: 1100px) {
  .menu-toggle { display: flex; }
  .main-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--primary);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s;
  }
  .main-nav.open { max-height: 400px; }
  .main-nav ul {
    flex-direction: column;
    padding: 10px 20px;
    gap: 0;
  }
  .main-nav a {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .main-nav li:last-child a { border-bottom: 0; }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 50px 0 0;
}
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.footer-col h3 {
  color: var(--white);
  font-size: 1.1em;
  margin-bottom: 20px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col li { margin: 8px 0; }
.footer-col a {
  color: rgba(255,255,255,0.7);
  font-size: 0.95em;
}
.footer-col a:hover { color: var(--secondary); }
.footer-bottom {
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.9em;
  color: rgba(255,255,255,0.5);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--secondary); }

@media (max-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}