:root {
  --bg: #0d0d0d;
  --bg-elevated: #141414;
  --bg-card: #1a1a1a;
  --text: #e8e8e8;
  --text-secondary: #a0a0a0;
  --text-tertiary: #707070;
  --border: #2a2a2a;
  --accent: #4d9fff;
  --accent-hover: #3d8fef;
  --radius: 8px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

code {
  font-size: 0.9em;
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: 4px;
}

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(8px);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.brand-title {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.02em;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-tertiary);
}

.header-search {
  flex: 1;
  max-width: 320px;
  margin-left: auto;
}

.header-search input {
  width: 100%;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 13px;
  outline: none;
}

.header-search input:focus {
  border-color: var(--accent);
}

.main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

.page-title {
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.page-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0 0 24px;
}

.era-section {
  margin-bottom: 32px;
}

.era-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.era-header h2 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}

.badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.version-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

.version-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: border-color 0.15s;
}

.version-card:hover {
  border-color: #444;
}

.version-card-top {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
}

.version-accent {
  width: 4px;
  height: 32px;
  border-radius: 2px;
  flex-shrink: 0;
}

.version-name {
  font-weight: 600;
  font-size: 14px;
  margin: 0 0 2px;
}

.version-sub {
  font-size: 12px;
  color: var(--text-tertiary);
  margin: 0;
}

.version-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  font-size: 12px;
}

.version-count {
  color: var(--text-secondary);
}

.version-folder {
  color: var(--text-tertiary);
  font-size: 11px;
  margin-top: 2px;
}

.version-enter {
  color: var(--text-tertiary);
}

.browse-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.browse-title-wrap h2 {
  font-size: 18px;
  margin: 0 0 2px;
}

.browse-sub {
  font-size: 12px;
  color: var(--text-tertiary);
  margin: 0;
}

.browse-stats {
  margin-left: auto;
  display: flex;
  gap: 20px;
}

.stat {
  text-align: right;
}

.stat-value {
  font-size: 18px;
  font-weight: 600;
}

.stat-label {
  font-size: 11px;
  color: var(--text-tertiary);
}

.filters {
  margin-bottom: 16px;
}

.filter-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.filter-label {
  font-size: 12px;
  color: var(--text-tertiary);
  min-width: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  padding: 0 12px;
  font-size: 12px;
  font-family: inherit;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s, border-color 0.12s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: #444;
  color: var(--text);
}

.btn-secondary.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover {
  color: var(--text);
  background: var(--bg-elevated);
}

.btn-downloaded {
  background: #1a3a1a;
  color: #6fcf6f;
  border-color: #2a5a2a;
}

.chart-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.chart-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.chart-table th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-tertiary);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
}

.chart-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.chart-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.chart-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.04);
}

.chart-table tbody tr:last-child td {
  border-bottom: none;
}

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

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

.pill {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.dx-stars {
  letter-spacing: 1px;
  font-size: 11px;
  color: var(--text-tertiary);
}

.dx-stars .on {
  color: var(--accent);
}

.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-secondary);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.search-results h2 {
  font-size: 16px;
  margin: 0 0 16px;
}

.search-result-meta {
  font-size: 11px;
  color: var(--text-tertiary);
}

.info-card {
  margin-top: 32px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.info-card h3 {
  font-size: 13px;
  margin: 0 0 8px;
}

.info-card p {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0 0 6px;
}

dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text);
  padding: 0;
  max-width: 480px;
  width: calc(100% - 32px);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
}

.dialog-content {
  padding: 24px;
}

.dialog-content h2 {
  margin: 0 0 12px;
  font-size: 16px;
}

.dialog-content p {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0 0 10px;
}

.dialog-content .btn {
  margin-top: 12px;
}

@media (max-width: 640px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .header-search {
    order: 3;
    max-width: none;
    width: 100%;
    margin-left: 0;
  }

  .browse-stats {
    width: 100%;
    margin-left: 0;
    margin-top: 8px;
  }
}