/* Modern Lightweight Responsive CSS */
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --badge-bg: #f1f5f9;
  --badge-text: #475569;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

[data-theme="dark"] {
  --bg-color: #0b0f19;
  --card-bg: #151d2f;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --border-color: #243049;
  --primary-light: #1e293b;
  --badge-bg: #1e293b;
  --badge-text: #cbd5e1;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* Header & Nav */
.navbar {
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.brand-icon {
  font-size: 1.4rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

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

.theme-toggle-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  transition: all 0.15s ease;
}

.theme-toggle-btn:hover {
  background-color: var(--badge-bg);
}

/* Main Container */
.main-wrapper {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

/* Home Minimal Search View */
.home-minimal-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(75vh - 70px);
  text-align: center;
  padding: 1rem;
}

.home-logo {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  letter-spacing: -0.5px;
}

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

.home-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.search-box-card {
  width: 100%;
  max-width: 940px;
}

.search-form {
  position: relative;
  display: flex;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 0.95rem 3.5rem 0.95rem 1.25rem;
  font-size: 1.05rem;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--card-bg);
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
  outline: none;
  transition: all 0.2s ease;
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.search-submit-btn {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.6rem 1rem;
  cursor: pointer;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s ease;
}

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

.query-tips {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Site Selection Checkboxes */
.site-filter-container {
  margin-top: 1.1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.site-checkbox-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.site-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
  transition: all 0.15s ease;
}

.site-checkbox-label:hover {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.site-checkbox-label input[type="checkbox"] {
  accent-color: var(--primary);
  cursor: pointer;
  width: 15px;
  height: 15px;
}

.site-checkbox-label.checked {
  border-color: var(--primary);
  background-color: var(--primary-light);
  color: var(--primary);
}

.filter-header-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-right: 0.2rem;
  white-space: nowrap;
}

/* Category (Genre) Checkboxes - Full width without scroll, ~10 per row */
.category-filter-container {
  margin-top: 0.65rem;
  display: flex;
  flex-direction: column;
  width: 100%;
}

.category-checkbox-group {
  display: flex;
  flex-direction: column;
  background-color: var(--card-bg);
  border: 1px dashed var(--border-color);
  padding: 0.55rem 0.75rem 0.45rem;
  border-radius: var(--radius-md);
  gap: 0.45rem;
  width: 100%;
  max-height: none;
  overflow: visible;
}

.category-top-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  width: 100%;
}

.category-items-wrapper {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
  width: 100%;
}

.category-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.16rem 0.38rem;
  background-color: var(--badge-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--badge-text);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.category-checkbox-label:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.category-checkbox-label input[type="checkbox"] {
  accent-color: var(--primary);
  cursor: pointer;
  width: 12px;
  height: 12px;
}

.category-checkbox-label.checked {
  border-color: var(--primary);
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 500;
}

.category-bottom-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.35rem;
  padding-top: 0.35rem;
  border-top: 1px dotted var(--border-color);
  width: 100%;
}

.site-action-btns {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  white-space: nowrap;
}

.site-mini-btn {
  background: none;
  border: 1px solid var(--border-color);
  background-color: var(--badge-bg);
  color: var(--text-muted);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

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

.query-badge {
  background-color: var(--badge-bg);
  color: var(--badge-text);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-family: monospace;
  cursor: pointer;
}

.query-badge:hover {
  border: 1px solid var(--primary);
}

/* Result Search View */
.search-header-bar {
  margin-bottom: 1.5rem;
}

.search-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.search-result-count {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.search-result-count strong {
  color: var(--text-main);
  font-weight: 700;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-select {
  background-color: var(--card-bg);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
}

.filter-select:focus {
  border-color: var(--primary);
}

/* Article Cards */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.article-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.site-badge {
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
}

.category-badge {
  background-color: var(--badge-bg);
  color: var(--badge-text);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.6rem;
  line-height: 1.4;
}

.article-snippet {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 0.5rem;
}

.highlight {
  background-color: #fef08a;
  color: #854d0e;
  padding: 0.1rem 0.2rem;
  border-radius: 2px;
  font-weight: 600;
}

[data-theme="dark"] .highlight {
  background-color: #854d0e;
  color: #fef08a;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.35rem;
  margin-top: 2rem;
  list-style: none;
  flex-wrap: wrap;
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--card-bg);
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

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

.page-btn.active {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

.page-btn.disabled {
  opacity: 0.4;
  pointer-events: none;
  cursor: not-allowed;
}

/* Stats Page Layout */
.stats-header {
  margin-bottom: 1.75rem;
}

.stats-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.overview-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.stat-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.stat-card-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.stat-card-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary);
}

.stat-card-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.stats-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.chart-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.chart-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chart-container {
  position: relative;
  height: 260px;
  width: 100%;
}

/* Drill-down Section */
.drilldown-section {
  background-color: var(--card-bg);
  border: 1.5px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  margin-top: 1.5rem;
}

.drilldown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.drilldown-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
}

.drilldown-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr;
  gap: 1.5rem;
}

/* Clickable Month Badges */
.month-selector-bar {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.month-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  background-color: var(--card-bg);
  color: var(--text-main);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.month-btn:hover, .month-btn.active {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* Table styles */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th, .data-table td {
  padding: 0.65rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.data-table tr:hover {
  background-color: var(--badge-bg);
}

/* Settings Form */
.settings-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  max-width: 650px;
  margin: 0 auto;
  box-shadow: var(--shadow-sm);
}

.setting-item {
  margin-bottom: 1.5rem;
}

.setting-label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.setting-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.setting-input {
  width: 100%;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-color);
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
}

.setting-input:focus {
  border-color: var(--primary);
}

.save-btn {
  background-color: var(--primary);
  color: white;
  border: none;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.save-btn:hover {
  background-color: var(--primary-hover);
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 999;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.open {
  display: flex;
}

.modal-container {
  background-color: var(--card-bg);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  font-size: 1rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Responsive Mobile */
@media (max-width: 768px) {
  .nav-container {
    padding: 0.6rem 1rem;
  }
  .brand-text {
    display: none;
  }
  .stats-two-col, .drilldown-grid {
    grid-template-columns: 1fr;
  }
  .search-meta-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .modal-container {
    max-height: 95vh;
  }
  .modal-title {
    font-size: 1.1rem;
  }
}