/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  transition: transform 0.3s ease, box-shadow var(--transition);
  transform: translateY(0);
}

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

.navbar.hidden {
  transform: translateY(-100%);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-600);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

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

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

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

.nav-dropdown {
  position: relative;
}

.nav-dropdown > .nav-link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-dropdown > .nav-link::before {
  content: '';
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover > .nav-link::before {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 140px;
  width: max-content;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  color: var(--gray-600);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-dropdown-item:hover {
  background: var(--gray-100);
  color: var(--primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* 搜索框 */
.nav-search {
  position: relative;
}

.search-btn {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--gray-600);
  transition: all var(--transition-fast);
}

.search-btn:hover {
  background: var(--gray-100);
  color: var(--primary);
}

.search-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2001;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 5rem 1rem 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.search-modal.open {
  opacity: 1;
  visibility: visible;
}

.search-modal-content {
  width: 100%;
  max-width: 600px;
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  transform: translateY(-20px);
  transition: transform var(--transition);
}

.search-modal.open .search-modal-content {
  transform: translateY(0);
}

.search-input-wrapper {
  position: relative;
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.search-input-wrapper svg {
  position: absolute;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 3rem;
  font-size: 1rem;
  border: none;
  background: var(--gray-50);
  border-radius: var(--radius);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  background: var(--white);
  box-shadow: 0 0 0 2px var(--primary);
}

.search-results {
  max-height: 400px;
  overflow-y: auto;
  padding: 0.5rem;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.search-result-item:hover {
  background: var(--gray-50);
}

.search-result-icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: var(--radius);
  color: var(--gray-600);
  flex-shrink: 0;
}

.search-result-content {
  flex: 1;
}

.search-result-title {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-900);
  margin-bottom: 0.25rem;
}

.search-result-desc {
  font-size: 0.8125rem;
  color: var(--gray-500);
}

.search-empty {
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--gray-400);
}

.search-empty svg {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 1rem;
  opacity: 0.5;
}

.search-tips {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--gray-200);
  font-size: 0.8125rem;
  color: var(--gray-500);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.search-tip-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.search-tip-key {
  padding: 0.25rem 0.5rem;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

.mobile-menu-btn {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.mobile-menu-btn span {
  display: block;
  width: 1.5rem;
  height: 2px;
  background: var(--gray-700);
  transition: all var(--transition-fast);
}

/* 主题切换器 */
.theme-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-btn {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.theme-btn:hover {
  transform: scale(1.1);
}

.theme-btn.active {
  border-color: var(--gray-900);
}

.theme-btn[data-theme="blue"] { background: #3b82f6; }
.theme-btn[data-theme="green"] { background: #10b981; }
.theme-btn[data-theme="purple"] { background: #8b5cf6; }
.theme-btn[data-theme="orange"] { background: #f97316; }
.theme-btn[data-theme="red"] { background: #ef4444; }

/* 用户菜单 */
.user-menu {
  position: relative;
}

.user-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.user-avatar:hover {
  transform: scale(1.05);
}

.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  width: 280px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: 1000;
  margin-top: 0.5rem;
}

.user-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
}

.user-info img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.user-name {
  font-weight: 600;
  color: var(--gray-900);
}

.user-email {
  font-size: 0.875rem;
  color: var(--gray-600);
}

.user-menu-divider {
  height: 1px;
  background: var(--gray-200);
}

.user-menu-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  color: var(--gray-700);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

.user-menu-item:hover {
  background: var(--gray-50);
  color: var(--gray-900);
}

.user-menu-item.active {
  background: var(--primary-light);
  color: var(--primary);
}

/* 移动端用户信息 */
.mobile-user-section {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-200);
}

.mobile-user-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--gray-50);
  border-radius: var(--radius);
  margin-bottom: 1rem;
}

.mobile-user-info img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.mobile-user-name {
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 0.25rem;
}

.mobile-user-email {
  font-size: 0.875rem;
  color: var(--gray-600);
}

/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  top: 4.5rem;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--white);
  padding: 1.5rem;
  transform: translateX(100%);
  transition: transform var(--transition);
  overflow-y: auto;
}

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

.mobile-nav-link {
  display: block;
  padding: 1rem 0;
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-200);
}

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

@media (max-width: 1024px) {
  .nav-menu, .nav-actions .btn, .nav-actions .user-menu {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }
}

/* 模态框 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 420px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition);
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
}

.modal-close {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--gray-500);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

.modal-body {
  padding: 1.5rem;
}

/* 表单样式 */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  background: var(--white);
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input::placeholder {
  color: var(--gray-400);
}

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

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--gray-600);
}

.form-checkbox input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--primary);
}

/* 页脚 */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.9375rem;
}

.footer-contact svg {
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--gray-800);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  font-size: 0.875rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-800);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--primary);
  color: var(--white);
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}


/* 右侧悬浮按钮 */
.float-buttons {
  position: fixed;
  right: 2rem;
  bottom: 2rem;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.float-btn {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

.float-btn.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.float-btn:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.float-btn svg {
  width: 1.5rem;
  height: 1.5rem;
}

.float-btn-customer {
  background: var(--primary);
  color: var(--white);
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

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

/* 客服提示气泡 */
.float-btn-tooltip {
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  margin-right: 1rem;
  padding: 0.5rem 1rem;
  background: var(--gray-900);
  color: var(--white);
  font-size: 0.875rem;
  white-space: nowrap;
  border-radius: var(--radius);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  pointer-events: none;
}

.float-btn-tooltip::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 6px solid var(--gray-900);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
}

.float-btn:hover .float-btn-tooltip {
  opacity: 1;
  visibility: visible;
  margin-right: 1.25rem;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .float-buttons {
    right: 1rem;
    bottom: 1rem;
  }

  .float-btn {
    width: 3rem;
    height: 3rem;
  }

  .float-btn svg {
    width: 1.25rem;
    height: 1.25rem;
  }

  .float-btn-tooltip {
    display: none;
  }
}