/* ========================================
   布局样式表 - 导航、页脚等
   ======================================== */

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 82px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(22px);
  border-bottom: 1px solid rgba(190, 201, 195, 0.32);
  box-shadow: 0 1px 0 rgba(190, 201, 195, 0.2);
  z-index: var(--z-fixed);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-3xl);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  height: 70px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 32px rgba(15, 27, 19, 0.12);
}

/* Logo */
.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  text-decoration: none;
  color: var(--primary-dark);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: color var(--transition-base);
}

.navbar-logo:hover {
  color: var(--primary-color);
}

.navbar-logo-icon {
  width: 46px;
  height: 46px;
  background: var(--brand-gradient);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: var(--font-size-lg);
  box-shadow: var(--shadow-sm);
}

/* 导航菜单 */
.navbar-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-3xl);
  margin: 0;
  padding: 0;
  align-items: center;
}

.navbar-item {
  position: relative;
}

.navbar-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) 0;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color var(--transition-base);
  position: relative;
}

.navbar-link::after {
  content: '';
  position: absolute;
  bottom: 12px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary-color);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.navbar-link:hover {
  color: var(--primary-dark);
}

.navbar-link:hover::after,
.navbar-item.active > .navbar-link::after {
  width: 100%;
}

.navbar-item.navbar-actions {
  display: flex;
  align-items: center;
  margin-left: var(--spacing-3xl);
}

.navbar-actions-inner {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.navbar-hotline {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--primary-dark);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.navbar-hotline strong {
  font-size: var(--font-size-lg);
  letter-spacing: 0.08em;
}

.btn-navbar {
  padding: var(--spacing-sm) var(--spacing-xl);
  font-size: var(--font-size-sm);
}

/* 下拉菜单 */
.navbar-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  background: var(--surface-glass);
  list-style: none;
  margin: var(--spacing-lg) 0 0;
  padding: var(--spacing-2xl);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
  border: 1px solid rgba(190, 201, 195, 0.4);
  min-width: 640px;
  backdrop-filter: blur(24px);
}

.navbar-item:hover .navbar-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.navbar-dropdown-item {
  padding: var(--spacing-md);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.navbar-dropdown-item:hover {
  background: rgba(27, 106, 201, 0.08);
}

.navbar-dropdown-link {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  color: var(--text-primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
}

.navbar-dropdown-link strong {
  font-size: 16px;
  color: var(--primary-dark);
}

.navbar-dropdown-desc {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
}

/* 汉堡菜单 */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.navbar-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -8px);
}

/* 主内容区域 */
main {
  margin-top: 82px;
  min-height: calc(100vh - 82px - 320px);
}

/* 页脚 */
.footer {
  position: relative;
  background: radial-gradient(circle at top, rgba(17, 76, 61, 0.95), rgba(10, 31, 43, 0.98));
  color: white;
  padding: var(--spacing-4xl) 0;
  margin-top: var(--spacing-4xl);
  overflow: hidden;
}

.footer::before {
  content: "";
  position: absolute;
  inset: -20% -30% auto -30%;
  height: 320px;
  background: linear-gradient(110deg, rgba(69, 168, 104, 0.32), rgba(27, 106, 201, 0.16));
  filter: blur(120px);
  opacity: 0.8;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
  position: relative;
  z-index: 1;
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.footer-section ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-section li {
  margin-bottom: var(--spacing-md);
  color: rgba(255, 255, 255, 0.8);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-base);
}

.footer-section a:hover {
  color: var(--accent-color);
  text-decoration: none;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.footer-contact-icon {
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  font-size: 14px;
}

.footer-divider {
  height: 1px;
  background-color: rgba(255, 255, 255, 0.16);
  margin: var(--spacing-2xl) 0;
  position: relative;
  z-index: 1;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-2xl);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  position: relative;
  z-index: 1;
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

.footer-social {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-social-link {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: all var(--transition-base);
}

.footer-social-link:hover {
  background: var(--accent-color);
  color: #0f1b13;
  transform: translateY(-4px);
}

/* 响应式导航 */
@media (max-width: 992px) {
  .navbar {
    padding: 0 var(--spacing-xl);
    height: 72px;
  }
  
  .navbar-toggle {
    display: flex;
  }
  
  .navbar-menu {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    box-shadow: var(--shadow-lg);
    border-bottom-left-radius: var(--radius-2xl);
    border-bottom-right-radius: var(--radius-2xl);
  }
  
  .navbar-menu.active {
    max-height: 800px;
  }
  
  .navbar-item {
    border-bottom: 1px solid rgba(190, 201, 195, 0.4);
  }
  
  .navbar-link {
    padding: var(--spacing-lg) var(--spacing-2xl);
  }
  
  .navbar-link::after {
    bottom: 0;
  }
  
  .navbar-item.navbar-actions {
    border-bottom: none;
    padding: var(--spacing-xl) var(--spacing-2xl) var(--spacing-2xl);
  }
  
  .navbar-actions-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-lg);
  }
  
  .navbar-hotline {
    align-items: flex-start;
  }
  
  .btn-navbar {
    width: 100%;
    justify-content: center;
  }
  
  .navbar-dropdown {
    position: static;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    box-shadow: none;
    border: none;
    background-color: transparent;
    transform: none;
    transition: all var(--transition-base);
    margin: 0;
    padding: 0 var(--spacing-2xl) var(--spacing-2xl);
  }
  
  .navbar-item.active .navbar-dropdown {
    opacity: 1;
    visibility: visible;
    max-height: 1000px;
  }
  
  main {
    margin-top: 72px;
  }
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: center;
  }
  
  .footer-social {
    justify-content: center;
  }
}

@media (max-width: 576px) {
  .navbar {
    height: 64px;
    padding: 0 var(--spacing-lg);
  }
  
  .navbar-logo {
    font-size: var(--font-size-xl);
  }
  
  .navbar-logo-icon {
    width: 40px;
    height: 40px;
    font-size: var(--font-size-base);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  main {
    margin-top: 64px;
  }
}

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
  flex-wrap: wrap;
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.82);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(190, 201, 195, 0.4);
  box-shadow: var(--shadow-sm);
}

.breadcrumb-item {
  color: var(--text-muted);
}

.breadcrumb-item.active {
  color: var(--primary-dark);
  font-weight: var(--font-weight-semibold);
}

.breadcrumb-item::after {
  content: '/';
  margin-left: var(--spacing-md);
  color: rgba(111, 124, 116, 0.6);
}

.breadcrumb-item:last-child::after {
  content: '';
}

.breadcrumb-link {
  color: var(--secondary-color);
  text-decoration: none;
}

.breadcrumb-link:hover {
  text-decoration: none;
  color: var(--primary-dark);
}