/* common.css - 公共布局、页头页脚、工具类 */

/* 容器 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 16px;
}

/* 栅格系统 */
.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -12px;
}

.col {
  flex: 1;
  padding: 0 12px;
}

.col-2 { flex: 0 0 16.6666%; padding: 0 12px; }
.col-3 { flex: 0 0 25%; padding: 0 12px; }
.col-4 { flex: 0 0 33.3333%; padding: 0 12px; }
.col-6 { flex: 0 0 50%; padding: 0 12px; }
.col-8 { flex: 0 0 66.6666%; padding: 0 12px; }
.col-9 { flex: 0 0 75%; padding: 0 12px; }
.col-12 { flex: 0 0 100%; padding: 0 12px; }

/* 工具类 */
.d-flex { display: flex; }
.d-flex-wrap { display: flex; flex-wrap: wrap; }
.d-flex-column { display: flex; flex-direction: column; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.p-16 { padding: 16px; }
.p-24 { padding: 24px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.4;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: #e55f00;
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-white);
}

.btn-secondary:hover {
  background-color: #0d3d78;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-gray);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-small {
  padding: 4px 12px;
  font-size: 12px;
}

/* 表单 */
.form-group {
  margin-bottom: 12px;
}

.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--color-gray);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-white);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-secondary);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* 面包屑 */
.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: var(--color-light-gray);
}

.breadcrumb a {
  color: var(--color-gray);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb span {
  margin: 0 6px;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--color-gray);
  transition: all 0.2s;
}

.pagination a:hover,
.pagination .current,
.pagination .active,
.pagination li.active a,
.pagination li.active span {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* 区块标题 */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.section-title {
  display: flex;
  align-items: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--color-dark);
}

.section-title::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 22px;
  margin-right: 10px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.section-more {
  font-size: 13px;
  color: var(--color-light-gray);
}

.section-more:hover {
  color: var(--color-primary);
}

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-white);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.header-top {
  background-color: #f8f8f8;
  border-bottom: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-gray);
}

.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 34px;
}

.header-top-links a {
  margin-right: 16px;
  color: var(--color-gray);
}

.header-top-links a:hover {
  color: var(--color-primary);
}

.header-main {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 700;
  font-size: 16px;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.2;
}

.logo-text small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--color-light-gray);
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 16px;
  font-size: 15px;
  color: var(--color-dark);
  border-radius: var(--radius);
  transition: all 0.2s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background-color: rgba(230, 0, 18, 0.06);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-search {
  position: relative;
  width: 220px;
}

.header-search input {
  width: 100%;
  height: 36px;
  padding: 0 36px 0 12px;
  border: 1px solid var(--color-border);
  border-radius: 18px;
  font-size: 13px;
  outline: none;
}

.header-search input:focus {
  border-color: var(--color-secondary);
}

.header-search button {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-secondary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 600;
}

.header-phone svg {
  width: 18px;
  height: 18px;
}

.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

/* 页脚 */
.site-footer {
  background-color: var(--color-dark);
  color: #ccc;
}

.footer-service {
  border-bottom: 1px solid #444;
  padding: 40px 0;
}

.footer-service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.footer-service-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-service-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid #555;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
}

.footer-service-icon svg {
  width: 24px;
  height: 24px;
}

.footer-service-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 4px;
}

.footer-service-desc {
  font-size: 12px;
  color: #999;
}

.footer-main {
  padding: 48px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
  gap: 32px;
}

.footer-about .footer-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-about p {
  font-size: 13px;
  line-height: 1.8;
  color: #999;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 13px;
  color: #aaa;
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-contact p {
  font-size: 13px;
  color: #aaa;
  margin-bottom: 8px;
}

.footer-contact .hotline {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 12px 0;
}

.footer-qr {
  width: 90px;
  height: 90px;
  background-color: var(--color-white);
  border-radius: var(--radius);
  padding: 4px;
  margin-top: 12px;
}

.footer-bottom {
  border-top: 1px solid #444;
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: #777;
}

.footer-bottom p {
  margin-bottom: 4px;
}

/* 移动端菜单 */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1100;
}

.mobile-nav-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 100%;
  background-color: var(--color-white);
  padding: 20px;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.mobile-nav.open .mobile-nav-panel {
  transform: translateX(0);
}

.mobile-nav-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-nav-list {
  margin-top: 48px;
}

.mobile-nav-list a {
  display: block;
  padding: 14px 0;
  font-size: 16px;
  color: var(--color-dark);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-list a.active {
  color: var(--color-primary);
}

/* 媒体查询 */
@media (max-width: 1279px) {
  .header-search {
    width: 180px;
  }
}

@media (max-width: 1023px) {
  .main-nav,
  .header-actions {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .mobile-nav {
    display: block;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }

  .mobile-nav.open {
    visibility: visible;
    opacity: 1;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .col-2,
  .col-3,
  .col-4,
  .col-6,
  .col-8,
  .col-9 {
    flex: 0 0 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-service-grid {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 18px;
  }
}