/* ADVSpecs 2.0 - Main Styles */

/* Light theme (default) */
:root {
  --color-primary: #ffc107;
  --color-primary-dark: #e0a800;
  --color-dark: #343a40;
  --color-light: #f8f9fa;
  --color-text: #212529;
  --color-text-muted: #6c757d;
  --color-border: #dee2e6;
  --color-link: #007bff;
  --color-success: #28a745;
  --color-danger: #dc3545;
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-table-header: #343a40;
  --color-table-header-hover: #454d55;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --container-max-width: 1400px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #ffc107;
    --color-primary-dark: #ffca2c;
    --color-dark: #1a1d20;
    --color-light: #212529;
    --color-text: #e9ecef;
    --color-text-muted: #adb5bd;
    --color-border: #495057;
    --color-link: #6ea8fe;
    --color-success: #75b798;
    --color-danger: #ea868f;
    --color-bg: #121416;
    --color-surface: #1a1d20;
    --color-table-header: #2c3034;
    --color-table-header-hover: #3d4349;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 14px;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg);
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
.header {
  background-color: var(--color-primary);
  color: var(--color-dark);
  padding: var(--spacing-sm) 0;
}

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

.brand {
  text-decoration: none;
  color: inherit;
}

.brand h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
}

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-sm);
}

.nav-links a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 4px;
  background-color: rgba(0, 0, 0, 0.25);
  transition: all 0.2s;
}

.nav-links a:hover {
  background-color: rgba(0, 0, 0, 0.4);
}

.nav-links a.active {
  background-color: var(--color-dark);
  color: #ffffff;
}

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

.header-separator {
  color: var(--color-dark);
  opacity: 0.4;
  font-weight: 300;
}

/* Main Content */
.main {
  padding: var(--spacing-lg) 0;
  min-height: calc(100vh - 200px);
}

/* Footer */
.footer {
  background-color: var(--color-dark);
  color: var(--color-light);
  padding: var(--spacing-lg) 0;
}

.footer p {
  margin: 0;
  font-size: 0.875rem;
}

.footer a {
  color: var(--color-light);
}

.footer .version {
  color: var(--color-text-muted);
}

/* Controls Panel */
.controls-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.panel-header {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.panel-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.header-year-range {
  min-width: 200px;
  max-width: 300px;
}

.header-year-range label {
  display: none;
}

.btn-clear-filters {
  background-color: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-clear-filters:hover {
  background-color: var(--color-border);
  color: var(--color-text);
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  align-items: flex-end;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.control-group label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.control-group input,
.control-group select {
  padding: 4px 8px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 0.875rem;
  min-width: 80px;
  background-color: var(--color-surface);
  color: var(--color-text);
}

.control-group select[multiple] {
  min-width: 120px;
  padding: 0;
}

.control-group select[multiple] option {
  padding: var(--spacing-xs) var(--spacing-sm);
}

.control-group select[multiple] option:checked {
  background-color: var(--color-primary);
  color: var(--color-dark);
}

.control-group input[type="number"] {
  width: 70px;
}

/* Year Range Slider */
.year-range-group {
  min-width: 180px;
}

.year-range-slider {
  position: relative;
  height: 24px;
  display: flex;
  align-items: center;
}

.year-range-track {
  position: absolute;
  left: 9px;
  right: 9px;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
}

.year-range-fill {
  position: absolute;
  height: 6px;
  background: var(--color-primary);
  border-radius: 3px;
  left: 9px;
}

.year-range-slider input[type="range"] {
  position: absolute;
  width: 100%;
  height: 6px;
  pointer-events: none;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}

.year-range-slider input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  background: transparent;
  border-radius: 3px;
}

.year-range-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  height: 18px;
  width: 18px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  pointer-events: auto;
  margin-top: -6px;
  border: 2px solid var(--color-dark);
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.year-range-slider input[type="range"]::-moz-range-track {
  height: 6px;
  background: transparent;
  border-radius: 3px;
}

.year-range-slider input[type="range"]::-moz-range-thumb {
  height: 14px;
  width: 14px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  pointer-events: auto;
  border: 2px solid var(--color-dark);
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.year-range-slider input[type="range"]:focus {
  outline: none;
}

.year-range-slider input[type="range"]:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.4);
}

.year-range-slider input[type="range"]:focus::-moz-range-thumb {
  box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.4);
}

.year-range-values {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text);
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
  padding: 0 2px;
}

.control-group input:focus,
.control-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(255, 193, 7, 0.25);
}

/* Toggle Switches */
.toggle-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.toggle-labels {
  display: flex;
  gap: 8px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 18px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: var(--color-primary);
  border-radius: 18px;
  transition: 0.3s;
}

.toggle-slider::before {
  content: "";
  position: absolute;
  height: 14px;
  width: 14px;
  left: 2px;
  bottom: 2px;
  background-color: var(--color-surface);
  border-radius: 50%;
  transition: 0.3s;
}

.toggle-switch input:checked + .toggle-slider {
  background-color: var(--color-primary);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(18px);
}

/* Data Table */
.table-container {
  display: inline-block;
  overflow-x: auto;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.data-table {
  width: auto;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th,
.data-table td {
  padding: var(--spacing-xs) var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.data-table th {
  background-color: var(--color-table-header);
  color: white;
  font-weight: 600;
  position: sticky;
  top: 0;
  cursor: pointer;
  user-select: none;
}

.data-table th:hover {
  background-color: var(--color-table-header-hover);
}

.data-table th .header-unit {
  display: block;
  font-size: 0.75rem;
  font-weight: normal;
  opacity: 0.8;
}

.data-table th.sortable::after {
  content: " ⇅";
  opacity: 0.5;
}

.data-table th.sort-asc::after {
  content: " ↑";
  opacity: 1;
}

.data-table th.sort-desc::after {
  content: " ↓";
  opacity: 1;
}

.data-table tbody tr:hover {
  background-color: rgba(255, 193, 7, 0.1);
}

.data-table tbody tr.selected {
  background-color: rgba(255, 193, 7, 0.25);
}

.data-table td.numeric {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.data-table td.url a {
  color: var(--color-link);
  text-decoration: none;
}

.data-table td.url a:hover {
  text-decoration: underline;
}

/* Checkbox column */
.data-table .checkbox-col {
  width: 30px;
  text-align: center;
}

.data-table input[type="checkbox"] {
  cursor: pointer;
}

/* Filters Row */
.filters-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-primary);
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 600;
}

.filter-chip button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
  opacity: 0.7;
}

.filter-chip button:hover {
  opacity: 1;
}

/* Compare Banner (above table) */
.compare-banner {
  display: none;
  background-color: var(--color-primary);
  color: var(--color-dark);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 8px;
  margin-bottom: var(--spacing-sm);
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.compare-banner.visible {
  display: flex;
}

.compare-banner .btn {
  background-color: var(--color-dark);
  color: white;
  border: none;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}

.compare-banner .btn:hover {
  background-color: var(--color-table-header-hover);
}

.compare-banner .btn-clear {
  background-color: transparent;
  color: var(--color-dark);
  border: 1px solid var(--color-dark);
  margin-left: var(--spacing-sm);
}

.compare-banner .btn-clear:hover {
  background-color: rgba(0, 0, 0, 0.1);
}

/* Charts Page */
.chart-container {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.chart-title {
  margin: 0 0 var(--spacing-md);
  font-size: 1.25rem;
  font-weight: 600;
}

/* Comparison Page */
.comparison-grid {
  display: grid;
  gap: var(--spacing-md);
}

.comparison-table {
  width: auto;
  border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
  text-align: left;
  padding: var(--spacing-xs) var(--spacing-sm);
  white-space: nowrap;
}

.comparison-table th {
  background-color: var(--color-table-header);
  color: white;
  border-bottom: 2px solid var(--color-border);
  font-weight: 600;
}

.comparison-table td {
  border-bottom: 1px solid var(--color-border);
}

.comparison-table .spec-name {
  font-weight: 600;
  background-color: var(--color-surface);
}

.comparison-table .spec-unit {
  display: block;
  font-size: 0.75rem;
  font-weight: normal;
  color: var(--color-text-muted);
}

.comparison-table .photo-row th {
  padding: var(--spacing-sm);
  vertical-align: bottom;
}

.comparison-table .bike-photo-cell {
  text-align: left;
}

.comparison-table .bike-photo {
  max-width: 200px;
  max-height: 130px;
  object-fit: contain;
  border-radius: 4px;
}

.comparison-table .best-value {
  background-color: rgba(40, 167, 69, 0.1);
  font-weight: 600;
}

/* Loading State */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 200px;
  color: var(--color-text-muted);
}

.loading::after {
  content: "";
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-left: var(--spacing-sm);
}

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

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--color-table-header);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 8px;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  z-index: 1000;
}

.toast.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  html {
    font-size: 13px;
  }

  .brand h1 {
    font-size: 1.25rem;
  }

  .subtitle {
    display: none;
  }

  .controls-row {
    flex-direction: column;
    align-items: stretch;
  }

  .control-group {
    width: 100%;
  }

  .control-group input,
  .control-group select {
    width: 100%;
  }

  .control-group input[type="number"] {
    width: 100%;
  }

  .data-table {
    font-size: 0.75rem;
  }

  .data-table th,
  .data-table td {
    padding: var(--spacing-xs);
  }
}

@media (max-width: 480px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
  }
}

/* Utility Classes */
.text-muted {
  color: var(--color-text-muted);
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.hidden {
  display: none !important;
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-dark);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 100;
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}