/**
 * 番红网络 - 组件样式
 * 导航栏、页脚、面包屑、标签等通用组件
 */

/* ========== 导航栏 ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-slogan {
  font-size: 0.75rem;
  color: var(--text-light);
  display: none;
}

/* 导航菜单 */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) 0;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* 下拉菜单 */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 180px;
  padding: var(--spacing-sm) 0;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
}

.nav-dropdown-item {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

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

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 30px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* 移动端导航 */
@media (max-width: 991.98px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-lg);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
  }

  .nav.active {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

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

  .nav-link {
    padding: var(--spacing-md) 0;
  }

  .nav-dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    padding-left: var(--spacing-md);
    background: var(--bg-gray);
    display: none;
  }

  .nav-dropdown.active .nav-dropdown-menu {
    display: block;
  }

  .logo-slogan {
    display: block;
  }
}

/* ========== 页脚 ========== */
.footer {
  background: var(--secondary-color);
  color: var(--bg-white);
  padding: var(--spacing-xxl) 0 0;
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-brand .logo-text {
  background: linear-gradient(135deg, #fff 0%, #ddd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-desc {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: var(--bg-white);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
}

.footer-column h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--bg-white);
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--bg-white);
  padding-left: var(--spacing-sm);
}

.footer-contact p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

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

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

@media (max-width: 991.98px) {
  .footer-main {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 575.98px) {
  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }
}

/* ========== 面包屑 ========== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.breadcrumb-item::after {
  content: '/';
  color: var(--text-light);
}

.breadcrumb-item:last-child::after {
  content: none;
}

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

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: 500;
}

/* ========== 标签 ========== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-xl);
  background: var(--bg-gray);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.tag:hover {
  background: var(--primary-color);
  color: var(--bg-white);
}

.tag-primary {
  background: rgba(231, 76, 60, 0.1);
  color: var(--primary-color);
}

.tag-success {
  background: rgba(39, 174, 96, 0.1);
  color: var(--success-color);
}

/* ========== 徽章 ========== */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 10px;
  background: var(--primary-color);
  color: var(--bg-white);
}

.badge-dot {
  width: 8px;
  height: 8px;
  min-width: 8px;
  padding: 0;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

/* ========== 空状态 ========== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xxl);
  text-align: center;
}

.empty-state-icon {
  font-size: 4rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.empty-state-desc {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* ========== 加载状态 ========== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== 搜索框 ========== */
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-gray);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xs);
  transition: all var(--transition-fast);
}

.search-box:focus-within {
  background: var(--bg-white);
  box-shadow: 0 0 0 2px var(--primary-color);
}

.search-input {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  color: var(--text-primary);
}

.search-input::placeholder {
  color: var(--text-light);
}

.search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  border-radius: var(--radius-md);
  color: var(--bg-white);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.search-btn:hover {
  background: var(--primary-dark);
}

/* ========== 表单样式 ========== */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-error {
  color: var(--danger-color);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
}

/* ========== 工具提示 ========== */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--secondary-color);
  color: var(--bg-white);
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
  bottom: calc(100% + 8px);
}