/* nav.css - 导航+面包屑+分页（全局加载） */

/* ===== Header / Navigation ===== */
.header {
  background: var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: 2px;
}
.logo a { color: var(--secondary); }
.logo a:hover { color: var(--white); }

/* Desktop Nav */
.nav-menu { display: none; }
.nav-menu ul { display: flex; gap: 4px; }
.nav-menu a {
  display: block;
  padding: 8px 14px;
  color: var(--white);
  font-size: 14px;
  border-radius: 4px;
  transition: all 0.2s;
}
.nav-menu a:hover,
.nav-menu a.active {
  background: rgba(212,165,116,0.2);
  color: var(--secondary);
}

/* Hamburger Menu */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  background: var(--dark);
  padding: 10px 20px;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease-out;
}
.mobile-menu.active {
  display: block;
  opacity: 1;
  max-height: 500px;
}
.mobile-menu a {
  display: block;
  padding: 12px 0;
  color: var(--white);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-size: 14px;
}
.mobile-menu a:hover,
.mobile-menu a.active { color: var(--secondary); }

/* ===== Breadcrumb ===== */
.breadcrumb {
  background: var(--dark);
  padding: 12px 0;
}
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; }
.breadcrumb li { color: #aaa; font-size: 12px; }
.breadcrumb li + li::before {
  content: ">";
  margin: 0 8px;
  color: var(--secondary);
}
.breadcrumb a { color: #ccc; }
.breadcrumb a:hover { color: var(--secondary); }
.breadcrumb li:last-child { color: var(--white); }

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border-radius: 4px;
  background: var(--white);
  color: var(--primary);
  font-size: 13px;
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.pagination a:hover {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.pagination .current {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 999;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--secondary); color: var(--dark); }

/* ===== Responsive ===== */
@media (min-width: 1024px) {
  .nav-menu { display: block; }
  .hamburger { display: none; }
  .mobile-menu { display: none !important; }
}
@media (max-width: 767px) {
  .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
}