/* ============================================
   BIMISEEK AI PAGE UI - FLAT MODERN NAV
   ============================================ */

/* ----- CSS Variables ----- */
:root {
  --bs-primary: #0F766E;
  --bs-primary-hover: #0D9488;
  --bs-primary-light: #E6F8F5;
  --bs-primary-text: #FFFFFF;
  --bs-page-bg: #F5F7FA;
  --bs-header-bg: #FFFFFF;
  --bs-card-bg: #FFFFFF;
  --bs-input-bg: #FFFFFF;
  --bs-text-primary: #1F2937;
  --bs-text-secondary: #6B7280;
  --bs-text-tertiary: #9CA3AF;
  --bs-text-placeholder: #9CA3AF;
  --bs-border: #E5E7EB;
  --bs-card-border: #F3F4F6;
  --bs-shadow-search: 0 4px 20px rgba(0,0,0,0.06);
  --bs-shadow-card: 0 2px 8px rgba(0,0,0,0.04);
  --bs-shadow-card-hover: 0 8px 24px rgba(0,0,0,0.08);
  --bs-radius-card: 16px;
  --bs-radius-pill: 9999px;
  --bs-container: 1200px;
}

html.dark {
  --bs-page-bg: #0E1119;
  --bs-header-bg: rgba(14, 17, 25, 0.95);
  --bs-card-bg: rgba(30, 36, 52, 0.7);
  --bs-input-bg: rgba(30, 36, 52, 0.8);
  --bs-text-primary: #E8EEF8;
  --bs-text-secondary: #94a3b8;
  --bs-text-tertiary: #64748b;
  --bs-text-placeholder: #64748b;
  --bs-border: rgba(255,255,255,0.08);
  --bs-card-border: rgba(255,255,255,0.06);
  --bs-shadow-search: 0 4px 20px rgba(0,0,0,0.25);
  --bs-shadow-card: 0 2px 8px rgba(0,0,0,0.15);
  --bs-shadow-card-hover: 0 8px 24px rgba(0,0,0,0.3);
}

/* 防止移动端出现横向滚动条 */
html,
body {
  overflow-x: hidden;
}

/* ----- Body Reset for BimiSeek Page ----- */
.bs-body {
  background-color: var(--bs-page-bg);
  color: var(--bs-text-primary);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.bs-main {
  flex: 1;
}

/* ----- Container ----- */
.bs-container {
  width: 100%;
  max-width: var(--bs-container);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

@media (min-width: 640px) {
  .bs-container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .bs-container {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

/* ----- Header ----- */
.bs-header {
  background-color: var(--bs-header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bs-border);
  box-shadow: none;
}

.bs-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
  max-width: 100%;
  min-width: 0;
}

.bs-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  flex-shrink: 0;
  min-width: 0;
}

.bs-logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--bs-primary), #0D9488);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.bs-logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bs-text-primary);
  letter-spacing: -0.02em;
}

/* 默认隐藏桌面导航，在对应断点显示，配合 HTML 中的 hidden md:flex / hidden sm:flex */
.bs-header-nav {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

@media (min-width: 768px) {
  .bs-header-nav {
    display: flex;
  }
}

.bs-nav-link {
  padding: 0.5rem 0.875rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--bs-text-secondary);
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.bs-nav-link:hover {
  color: var(--bs-text-primary);
  background-color: rgba(24, 179, 160, 0.08);
}

.bs-header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 100%;
  min-width: 0;
}

.bs-header-actions-nav {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

@media (min-width: 640px) {
  .bs-header-actions-nav {
    display: flex;
  }
}

.bs-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  width: 40px;
  height: 40px;
  border-radius: 9999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--bs-text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.bs-icon-btn:hover {
  background-color: rgba(24, 179, 160, 0.08);
  color: var(--bs-text-primary);
}

.bs-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  border: none;
  background-color: var(--bs-primary);
  color: var(--bs-primary-text);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
  white-space: nowrap;
}

.bs-btn-primary:hover {
  background-color: var(--bs-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(24, 179, 160, 0.25);
}

.bs-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.625rem 1.25rem;
  border-radius: 9999px;
  border: 1px solid var(--bs-border);
  background-color: var(--bs-card-bg);
  color: var(--bs-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.bs-btn-secondary:hover {
  border-color: var(--bs-primary);
  color: var(--bs-primary);
  background-color: var(--bs-primary-light);
}

.bs-dropdown {
  background-color: var(--bs-card-bg);
  border: 1px solid var(--bs-border);
  border-radius: 12px;
  box-shadow: var(--bs-shadow-card-hover);
  overflow: hidden;
}

.bs-dropdown .lang-option {
  color: var(--bs-text-primary);
}

.bs-dropdown .lang-option:hover {
  background-color: var(--bs-primary-light);
  color: var(--bs-primary);
}

html.dark .bs-dropdown .lang-option:hover {
  background-color: rgba(24, 179, 160, 0.15);
}

.bs-mobile-menu-divider {
  border-color: var(--bs-border);
}
/* 移动端顶部操作区自适应，避免横向溢出 */
@media (max-width: 480px) {
  .bs-header-inner {
    gap: 0.5rem;
  }
  .bs-header-actions {
    gap: 0.25rem;
  }
  .bs-btn-primary {
    padding: 0.5rem 0.625rem;
  }
  .bs-btn-primary span {
    display: none;
  }
}


/* ----- Hero Section ----- */
.bs-hero-section {
  padding: 3rem 0 2rem;
  text-align: center;
}

.bs-hero-title {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--bs-text-primary);
  max-width: 680px;
  margin: 0 auto;
  word-break: break-word;
}

.bs-hero-highlight {
  color: var(--bs-primary);
}

@media (min-width: 640px) {
  .bs-hero-title {
    font-size: 2.25rem;
  }
}

@media (min-width: 1024px) {
  .bs-hero-section {
    padding: 4rem 0 2.5rem;
  }
  .bs-hero-title {
    font-size: 2.75rem;
  }
}

/* ----- Search Section ----- */
.bs-search-section {
  padding-bottom: 2rem;
}

.bs-search-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 720px;
  margin: 0 auto;
  padding: 0.5rem;
  background-color: var(--bs-card-bg);
  border: 1px solid var(--bs-border);
  border-radius: 9999px;
  box-shadow: var(--bs-shadow-search);
  max-width: 100%;
  min-width: 0;
}

.bs-search-mode {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding-left: 0.5rem;
  flex-shrink: 0;
}

.bs-mode-btn {
  padding: 0.5rem 0.875rem;
  border-radius: 9999px;
  border: none;
  background: transparent;
  color: var(--bs-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.bs-mode-btn:hover {
  color: var(--bs-text-primary);
  background-color: rgba(24, 179, 160, 0.08);
}

.bs-mode-btn.active {
  background-color: var(--bs-primary);
  color: var(--bs-primary-text);
}

.bs-search-input-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.bs-search-icon {
  width: 20px;
  height: 20px;
  color: var(--bs-text-tertiary);
  flex-shrink: 0;
}

.bs-search-input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  color: var(--bs-text-primary);
  font-size: 0.9375rem;
  outline: none;
  padding: 0.5rem 0;
}

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

.bs-clear-search {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 9999px;
  border: none;
  background: var(--bs-border);
  color: var(--bs-text-tertiary);
  cursor: pointer;
  flex-shrink: 0;
}

.bs-clear-search:hover {
  background: var(--bs-text-tertiary);
  color: var(--bs-card-bg);
}

.bs-search-scope,
.bs-featured-scope {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding-right: 0.5rem;
  flex-shrink: 0;
}

.bs-scope-btn {
  padding: 0.375rem 0.625rem;
  border-radius: 9999px;
  border: none;
  background: transparent;
  color: var(--bs-text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.bs-scope-btn:hover {
  color: var(--bs-text-primary);
}

.bs-scope-btn.active {
  background-color: var(--bs-primary-light);
  color: var(--bs-primary);
}

html.dark .bs-scope-btn.active {
  background-color: rgba(24, 179, 160, 0.15);
}

.bs-scope-divider {
  color: var(--bs-border);
  font-size: 0.8125rem;
}

@media (max-width: 640px) {
  .bs-search-bar {
    flex-wrap: wrap;
    border-radius: 20px;
    padding: 0.75rem;
    max-width: 100%;
  }
  .bs-search-mode,
  .bs-search-input-wrap,
  .bs-search-scope {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }
  .bs-search-input-wrap {
    order: -1;
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--bs-border);
    margin-bottom: 0.5rem;
  }
}

/* ----- Featured Section ----- */
.bs-featured-section {
  padding: 1.5rem 0;
}

.bs-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  gap: 1rem;
}

.bs-section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bs-text-primary);
}

.bs-featured-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .bs-featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .bs-featured-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.bs-featured-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem;
  background-color: var(--bs-card-bg);
  border: 1px solid var(--bs-card-border);
  border-radius: var(--bs-radius-card);
  box-shadow: var(--bs-shadow-card);
  text-decoration: none;
  transition: all 0.25s ease;
}

.bs-featured-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--bs-shadow-card-hover);
  border-color: rgba(24, 179, 160, 0.3);
}

.bs-featured-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: cover;
  flex-shrink: 0;
  background-color: var(--bs-page-bg);
  border: 1px solid var(--bs-border);
}

.bs-featured-icon.fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.bs-featured-content {
  flex: 1;
  min-width: 0;
}

.bs-featured-tag {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.bs-featured-tag.teal {
  background-color: rgba(24, 179, 160, 0.12);
  color: #0F766E;
}

.bs-featured-tag.purple {
  background-color: rgba(139, 92, 246, 0.12);
  color: #6d28d9;
}

.bs-featured-tag.orange {
  background-color: rgba(249, 115, 22, 0.12);
  color: #c2410c;
}

.bs-featured-tag.blue {
  background-color: rgba(59, 130, 246, 0.12);
  color: #1d4ed8;
}

html.dark .bs-featured-tag.teal {
  background-color: rgba(24, 179, 160, 0.2);
}

html.dark .bs-featured-tag.purple {
  background-color: rgba(139, 92, 246, 0.2);
}

html.dark .bs-featured-tag.orange {
  background-color: rgba(249, 115, 22, 0.2);
}

html.dark .bs-featured-tag.blue {
  background-color: rgba(59, 130, 246, 0.2);
}

.bs-featured-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--bs-text-primary);
  margin-bottom: 0.25rem;
}

.bs-featured-desc {
  font-size: 0.8125rem;
  color: var(--bs-text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ----- Category Section ----- */
.bs-category-section {
  padding: 1rem 0;
  position: sticky;
  top: 64px;
  z-index: 40;
  background-color: var(--bs-page-bg);
}

.bs-category-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  max-width: 100%;
  min-width: 0;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.bs-category-tabs::-webkit-scrollbar {
  display: none;
}

.bs-category-tab {
  flex-shrink: 0;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  border: 1px solid var(--bs-border);
  background-color: var(--bs-card-bg);
  color: var(--bs-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.bs-category-tab:hover {
  border-color: var(--bs-primary);
  color: var(--bs-primary);
  background-color: var(--bs-primary-light);
}

html.dark .bs-category-tab:hover {
  background-color: rgba(24, 179, 160, 0.15);
}

.bs-category-tab.active {
  background-color: var(--bs-primary);
  border-color: var(--bs-primary);
  color: var(--bs-primary-text);
}

/* ----- Cards Section ----- */
.bs-cards-section {
  padding: 1.5rem 0 3rem;
}

.bs-card-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .bs-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .bs-card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1280px) {
  .bs-card-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.bs-website-card {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  padding: 1.125rem;
  background-color: var(--bs-card-bg);
  border: 1px solid var(--bs-card-border);
  border-radius: var(--bs-radius-card);
  box-shadow: var(--bs-shadow-card);
  text-decoration: none;
  transition: all 0.25s ease;
  height: 100%;
}

.bs-website-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--bs-shadow-card-hover);
  border-color: rgba(24, 179, 160, 0.3);
}

.bs-card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
}

.bs-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
  flex-shrink: 0;
  background-color: var(--bs-page-bg);
  border: 1px solid var(--bs-border);
}

.bs-card-icon.fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.bs-card-meta {
  flex: 1;
  min-width: 0;
}

.bs-card-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--bs-text-primary);
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bs-card-category {
  font-size: 0.75rem;
  color: var(--bs-text-secondary);
}

.bs-card-desc {
  font-size: 0.8125rem;
  color: var(--bs-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.bs-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.bs-card-tag {
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  background-color: var(--bs-page-bg);
  border: 1px solid var(--bs-border);
  color: var(--bs-text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  transition: all 0.15s ease;
  cursor: pointer;
}

.bs-card-tag:hover {
  background-color: var(--bs-primary-light);
  border-color: var(--bs-primary);
  color: var(--bs-primary);
}

html.dark .bs-card-tag {
  background-color: rgba(255,255,255,0.04);
}

html.dark .bs-card-tag:hover {
  background-color: rgba(24, 179, 160, 0.15);
}

.bs-card-hot {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--bs-text-secondary);
  margin-top: auto;
  padding-top: 0.25rem;
}

/* ----- Footer ----- */
.bs-footer {
  background-color: var(--bs-card-bg);
  border-top: 1px solid var(--bs-border);
  margin-top: auto;
  box-shadow: none;
}

.bs-footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.5rem 0;
  text-align: center;
}

.bs-footer-copyright {
  font-size: 0.875rem;
  color: #4b5563;
}

.bs-footer-powered {
  font-size: 0.8125rem;
  color: #4b5563;
}

html.dark .bs-footer-copyright,
html.dark .bs-footer-powered {
  color: #94a3b8;
}

/* ----- Back to Top ----- */
.bs-back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 9999px;
  border: 1px solid var(--bs-border);
  background-color: var(--bs-card-bg);
  color: var(--bs-text-secondary);
  box-shadow: var(--bs-shadow-card-hover);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 50;
}

.bs-back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.bs-back-to-top:hover {
  background-color: var(--bs-primary);
  border-color: var(--bs-primary);
  color: var(--bs-primary-text);
  transform: translateY(-2px);
}

/* ----- Empty State ----- */
#emptyState {
  color: var(--bs-text-secondary);
}

#emptyState.visible {
  display: flex;
}

/* ----- Skeleton Adaptation ----- */
#skeletonContainer > div {
  background-color: var(--bs-card-bg) !important;
  border: 1px solid var(--bs-card-border) !important;
  border-radius: var(--bs-radius-card) !important;
  padding: 1.125rem !important;
  box-shadow: var(--bs-shadow-card) !important;
}

#skeletonContainer .skeleton-item {
  background: linear-gradient(90deg, var(--bs-page-bg) 25%, var(--bs-border) 37%, var(--bs-page-bg) 63%);
  background-size: 200% 100%;
}

html.dark #skeletonContainer .skeleton-item {
  background: linear-gradient(90deg, rgba(30, 36, 52, 0.6) 25%, rgba(255,255,255,0.05) 37%, rgba(30, 36, 52, 0.6) 63%);
}

/* ----- Card Entry Animation ----- */
@keyframes bs-fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.bs-card-enter {
  animation: bs-fade-up 0.35s ease-out forwards;
  opacity: 0;
}

/* ----- Toast ----- */
#appToastContent.toast-info {
  background: var(--bs-primary);
  box-shadow: var(--bs-shadow-card-hover);
}

#appToastContent.toast-warning {
  background: #f97316;
}

#appToastContent.toast-error {
  background: #ef4444;
}

#appToastContent.toast-success {
  background: #22c55e;
}

/* ----- Reduced Motion ----- */
@media (prefers-reduced-motion: reduce) {
  .bs-website-card,
  .bs-featured-card,
  .bs-category-tab,
  .bs-back-to-top,
  .bs-btn-primary,
  .bs-btn-secondary,
  .bs-card-enter {
    transition: none;
    animation: none;
  }
  .bs-website-card:hover,
  .bs-featured-card:hover {
    transform: none;
  }
}

/* ----- Merged from a11y-fix.css (deployment cleanup) ----- */
:root {
  --bs-primary: #0F766E;
  --bs-primary-hover: #115E59;
}

.bs-card-category,
.bs-card-hot {
  color: var(--bs-text-secondary);
}

.bs-footer-copyright,
.bs-footer-powered {
  color: var(--bs-text-primary);
}