/* ==========================================
   凉山保险行业协会官网 - 布局系统
   彝族漆器风 — 黑底·锯齿纹·菱形装饰
   ========================================== */

/* 页面整体布局 */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  padding: var(--spacing-10) 0;
}

/* ==========================================
   顶部信息条
   ========================================== */

.top-bar {
  background-color: var(--yi-black);
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
  padding: 8px 0;
  letter-spacing: 0.3px;
}

.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.top-bar-contact {
  display: flex;
  align-items: center;
  gap: var(--spacing-5);
}

.top-bar-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}

.top-bar-item:hover {
  color: var(--color-text-inverse);
}

.top-bar-item svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.top-bar-date {
  color: var(--yi-gold);
  opacity: 0.7;
}

/* ==========================================
   主导航栏
   ========================================== */

.header {
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  box-shadow: 0 1px 3px rgba(28, 20, 18, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-base);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo区域 */
.header-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.header-logo img {
  height: 60px;
  width: auto;
  transition: opacity var(--transition-fast);
}

.header-logo:hover img {
  opacity: 0.85;
}

/* 导航菜单 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: 8px 16px;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  border-radius: var(--radius-md);
  white-space: nowrap;
  position: relative;
}

/* active 导航项用底部色条指示 */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-base);
  transform: translateX(-50%);
  border-radius: 1px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-lighter);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 20px;
}

.nav-link.active {
  font-weight: var(--font-semibold);
}

/* 下拉箭头 */
.nav-arrow {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.nav-item:hover .nav-arrow {
  transform: rotate(180deg);
}

/* 二级菜单 */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 180px;
  background-color: var(--color-bg-white);
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-base) 150ms;
  z-index: 100;
  padding: var(--spacing-2);
  overflow: hidden;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition-delay: 0ms;
}

.nav-dropdown-item {
  display: block;
  padding: 10px 16px;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  white-space: nowrap;
  border-radius: var(--radius-md);
}

.nav-dropdown-item:hover {
  background-color: var(--color-primary-lighter);
  color: var(--color-primary);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-2);
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================
   页脚 — 保留锯齿带作为唯一签名装饰
   ========================================== */

.footer {
  background-color: var(--yi-black);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--spacing-16) 0 0;
  position: relative;
  overflow: hidden;
}

/* 顶部锯齿带 — 唯一的签名性彝族纹样装饰 */
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: repeating-linear-gradient(
    90deg,
    var(--yi-red) 0px,
    var(--yi-red) 8px,
    var(--yi-gold) 8px,
    var(--yi-gold) 16px
  );
  mask-image: url("data:image/svg+xml,%3Csvg width='16' height='8' viewBox='0 0 16 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolygon points='0,0 8,8 16,0' fill='black'/%3E%3C/svg%3E");
  mask-size: 16px 8px;
  mask-repeat: repeat-x;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg width='16' height='8' viewBox='0 0 16 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolygon points='0,0 8,8 16,0' fill='black'/%3E%3C/svg%3E");
  -webkit-mask-size: 16px 8px;
  -webkit-mask-repeat: repeat-x;
  z-index: 1;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--spacing-10);
  padding-bottom: var(--spacing-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
  position: relative;
  z-index: 1;
}

.footer-section h3 {
  color: var(--color-text-inverse);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--spacing-5);
  position: relative;
  padding-bottom: var(--spacing-3);
  letter-spacing: 0.5px;
}

.footer-section h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: linear-gradient(to right, var(--color-accent), transparent);
  border-radius: 1px;
}

.footer-section p {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-2);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--yi-gold);
}

.footer-about-text {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--spacing-5);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-3);
  font-size: var(--text-sm);
}

.footer-contact-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  color: var(--color-accent);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

/* 链接前的小圆点 */
.footer-links a {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: 3px 0;
  transition: all var(--transition-fast);
}

.footer-links a::before {
  content: '';
  width: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.25);
  flex-shrink: 0;
  transition: all var(--transition-fast);
  border-radius: 50%;
}

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

.footer-links a:hover::before {
  background: var(--yi-gold);
}

/* 页脚底部 */
.footer-bottom {
  padding: var(--spacing-6) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.55);
  position: relative;
  z-index: 1;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-xs);
}

.footer-bottom a:hover {
  color: var(--yi-gold);
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.footer-bottom-links span {
  color: rgba(255, 255, 255, 0.15);
}

/* ==========================================
   内容区域布局
   ========================================== */

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) 0;
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

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

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

.breadcrumb-separator {
  margin: 0 var(--spacing-1);
  color: var(--color-text-tertiary);
}

/* 页面标题 */
.page-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-6);
  padding-bottom: var(--spacing-4);
  border-bottom: 2px solid var(--color-primary);
}

/* 网格布局 */
.grid { display: grid; gap: var(--spacing-6); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* 两栏布局 */
.layout-two-column {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--spacing-8);
}

.layout-main { min-width: 0; }
.layout-sidebar { min-width: 0; }

/* 三栏布局 */
.layout-three-column {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

/* ==========================================
   响应式 - 平板
   ========================================== */

@media (max-width: 1024px) {
  .header-container {
    height: 64px;
  }

  .header-logo img {
    height: 40px;
  }

  .header-logo-title {
    font-size: var(--text-base);
  }

  .header-logo-subtitle {
    display: none;
  }

  .nav-link {
    padding: 6px 12px;
    font-size: var(--text-xs);
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
  }

  .layout-two-column {
    grid-template-columns: 1fr 240px;
    gap: var(--spacing-6);
  }

  .layout-three-column {
    gap: var(--spacing-6);
  }

  .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

/* ==========================================
   响应式 - 移动端
   ========================================== */

@media (max-width: 768px) {
  :root {
    --container-padding: 16px;
  }

  .top-bar {
    display: none;
  }

  .header-container {
    height: 56px;
  }

  .header-logo img {
    height: 36px;
  }

  .header-logo-title {
    font-size: var(--text-sm);
  }

  .header-logo-subtitle {
    display: none;
  }

  /* 移动端菜单 */
  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-xl);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    border-top: 1px solid var(--color-border);
  }

  .nav-menu.active {
    max-height: calc(100vh - 56px);
    overflow-y: auto;
  }

  .nav-item {
    border-bottom: 1px solid var(--color-border-light);
  }

  .nav-link {
    padding: var(--spacing-4) var(--spacing-5);
    font-size: var(--text-base);
    border-radius: 0;
  }

  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background-color: var(--color-bg-subtle);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    border-radius: 0;
    padding: 0;
  }

  .nav-item.active .nav-dropdown {
    max-height: 500px;
    padding: var(--spacing-1) 0;
  }

  .nav-dropdown-item {
    padding: var(--spacing-3) var(--spacing-10);
    border-radius: 0;
  }

  /* 页脚 */
  .footer {
    padding: var(--spacing-10) 0 0;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    padding-bottom: var(--spacing-8);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-3);
    text-align: center;
    padding: var(--spacing-5) 0;
  }

  .footer-bottom-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .main-content {
    padding: var(--spacing-6) 0;
  }

  /* 网格布局 */
  .layout-two-column {
    grid-template-columns: 1fr;
    gap: var(--spacing-5);
  }

  .layout-sidebar {
    order: -1;
  }

  .layout-three-column {
    grid-template-columns: 1fr;
    gap: var(--spacing-5);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}