/**
 * 布局样式
 * Layout CSS - Header, Footer, Navigation
 */

/* 头部 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

body.dark-mode .site-header {
  background: rgba(26, 29, 41, 0.5);
}

.header-card {
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  padding: 16px 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-color);
  font-size: 24px;
  font-weight: bold;
  transition: var(--transition);
}

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

.site-logo img {
  height: 40px;
  width: auto;
}

.site-logo .site-favicon {
  height: 32px;
  width: 32px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}

.site-logo .site-name {
  flex-shrink: 0;
}

.header-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.header-menu {
  list-style: none;
  display: flex;
  gap: 5px;
  margin: 0;
  padding: 0;
  align-items: center;
}

.header-menu li {
  position: relative;
}

.header-menu a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  color: var(--text-color);
  text-decoration: none;
  border-radius: 6px;
  transition: var(--transition);
  font-size: 15px;
  font-weight: 500;
}

.header-menu a svg {
  flex-shrink: 0;
  opacity: 0.7;
  transition: var(--transition);
}

.header-menu a:hover {
  background: var(--bg-light);
  color: var(--primary-color);
}

.header-menu a:hover svg {
  opacity: 1;
}

.header-menu li.current-menu-item > a,
.header-menu li.current_page_item > a {
  background: var(--primary-color);
  color: white;
}

.header-menu li.current-menu-item > a svg,
.header-menu li.current_page_item > a svg {
  opacity: 1;
}

.header-menu .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  box-shadow: var(--shadow-hover);
  border-radius: 8px;
  min-width: 200px;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  z-index: 1000;
  list-style: none;
}

.header-menu li:hover > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header-menu .sub-menu li {
  display: block;
}

.header-menu .sub-menu a {
  padding: 10px 20px;
  border-radius: 0;
  font-size: 14px;
  font-weight: 400;
}

.header-menu .sub-menu a:hover {
  background: var(--bg-light);
  color: var(--primary-color);
}

/* 底部 */
.site-footer {
  background: transparent;
  padding: 20px 0;
  text-align: center;
  color: var(--text-muted);
}

.footer-card {
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 30px;
}

body.dark-mode .footer-card {
  background: rgba(26, 29, 41, 0.5);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.footer-links a,
.footer-links span {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}

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

.copyright {
  text-align: center;
  color: var(--text-muted);
}

/* 工具栏 */
.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toolbar-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  min-width: 40px;
  min-height: 40px;
  background: rgba(94, 114, 228, 0.1);
  border: 1px solid rgba(94, 114, 228, 0.2);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-color);
}

.toolbar-btn svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
}

.toolbar-btn:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(94, 114, 228, 0.3);
}

body.dark-mode .toolbar-btn {
  background: rgba(94, 114, 228, 0.15);
  border-color: rgba(94, 114, 228, 0.3);
}

.theme-toggle .theme-icon {
  width: 20px;
  height: 20px;
  transition: var(--transition);
}

/* 响应式 - 平板 */
@media (max-width: 768px) {
  .header-content {
    flex-wrap: wrap;
  }
  
  .header-nav {
    width: 100%;
    order: 3;
  }
  
  .header-menu {
    flex-direction: column;
    width: 100%;
  }
  
  .header-menu li {
    width: 100%;
  }
  
  .header-menu a {
    width: 100%;
  }
  
  .header-menu .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding-left: 20px;
    margin-top: 4px;
  }
  
  .header-menu .sub-menu a {
    font-size: 13px;
  }
}