/* CSS Variables & Themes */
:root {
  /* Dark Theme (Default) */
  --bg-main: #0b0f19;
  --bg-surface: #131b2e;
  --bg-surface-hover: #1b2640;
  --bg-subtle: #1c2742;
  --border: #233152;
  --border-light: #32436d;
  
  --text-main: #f8fafc;
  --text-sub: #94a3b8;
  --text-muted: #64748b;
  
  --accent: #38bdf8;
  --accent-hover: #0284c7;
  --accent-text: #0b0f19;

  --preview-bg: #080c14;
  --badge-bg: rgba(11, 15, 25, 0.85);

  --comp-lossless-bg: rgba(16, 185, 129, 0.12);
  --comp-lossless-text: #34d399;
  --comp-lossless-border: rgba(16, 185, 129, 0.25);

  --comp-lossy-bg: rgba(245, 158, 11, 0.12);
  --comp-lossy-text: #fbbf24;
  --comp-lossy-border: rgba(245, 158, 11, 0.25);

  --comp-uncompressed-bg: rgba(148, 163, 184, 0.12);
  --comp-uncompressed-text: #cbd5e1;
  --comp-uncompressed-border: rgba(148, 163, 184, 0.25);

  --warning-bg: rgba(239, 68, 68, 0.1);
  --warning-text: #f87171;
  --warning-border: rgba(239, 68, 68, 0.3);

  --notice-bg: rgba(56, 189, 248, 0.08);
  --notice-border: rgba(56, 189, 248, 0.2);
  --notice-text: #7dd3fc;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
}

[data-theme="light"] {
  /* Light Theme */
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f1f5f9;
  --bg-subtle: #f1f5f9;
  --border: #e2e8f0;
  --border-light: #cbd5e1;
  
  --text-main: #0f172a;
  --text-sub: #475569;
  --text-muted: #64748b;
  
  --accent: #0284c7;
  --accent-hover: #0369a1;
  --accent-text: #ffffff;

  --preview-bg: #f8fafc;
  --badge-bg: rgba(255, 255, 255, 0.9);

  --comp-lossless-bg: #ecfdf5;
  --comp-lossless-text: #059669;
  --comp-lossless-border: #a7f3d0;

  --comp-lossy-bg: #fffbeb;
  --comp-lossy-text: #d97706;
  --comp-lossy-border: #fde68a;

  --comp-uncompressed-bg: #f1f5f9;
  --comp-uncompressed-text: #475569;
  --comp-uncompressed-border: #cbd5e1;

  --warning-bg: #fef2f2;
  --warning-text: #dc2626;
  --warning-border: #fecaca;

  --notice-bg: #f0f9ff;
  --notice-border: #bae6fd;
  --notice-text: #0369a1;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "BIZ UDPGothic", Meiryo, sans-serif;
  line-height: 1.6;
  font-size: 14px;
  min-height: 100vh;
  transition: background-color 0.15s, color 0.15s;
}

.container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-surface);
  position: sticky;
  top: 0;
  z-index: 50;
  transition: background-color 0.15s, border-color 0.15s;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 56px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--text-main);
  text-decoration: none;
}

.brand-sep {
  color: var(--border-light);
}

.brand-sub {
  font-size: 13px;
  color: var(--text-sub);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
}

/* Theme Toggle Button */
.theme-btn {
  padding: 5px 10px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s;
}

.theme-btn:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-light);
}

/* Toggle Switch Control (Raw Mode) */
.toggle-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
  font-size: 12.5px;
  color: var(--text-sub);
}

.toggle-control input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 32px;
  height: 18px;
  background-color: var(--border-light);
  border-radius: 9999px;
  transition: background-color 0.2s;
  flex-shrink: 0;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background-color: #ffffff;
  border-radius: 50%;
  transition: transform 0.2s;
}

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

.toggle-control input:checked + .toggle-switch::after {
  transform: translateX(14px);
}

.toggle-text {
  white-space: nowrap;
}

.header-count {
  font-size: 12.5px;
  color: var(--text-muted);
  white-space: nowrap;
}

.header-count strong {
  color: var(--text-main);
}

/* Intro Section */
.intro-section {
  padding: 20px 0 16px;
  border-bottom: 1px solid var(--border);
}

.intro-content {
  display: flex;
  flex-direction: column;
}

.intro-desc {
  font-size: 13.5px;
  color: var(--text-sub);
  line-height: 1.7;
}

.raw-mode-notice {
  margin-top: 12px;
  padding: 10px 14px;
  background-color: var(--notice-bg);
  border: 1px solid var(--notice-border);
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  color: var(--notice-text);
  line-height: 1.6;
}

/* Controls Section */
.controls-section {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-surface);
  transition: background-color 0.15s, border-color 0.15s;
}

.search-sort-row {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  align-items: center;
}

.search-box {
  position: relative;
  flex: 1;
}

.search-box input {
  width: 100%;
  padding: 8px 12px;
  background-color: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}

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

.clear-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 6px;
}

.clear-btn:hover {
  color: var(--text-main);
}

.sort-box {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-sub);
  white-space: nowrap;
}

.sort-box select {
  padding: 7px 10px;
  background-color: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 13px;
  outline: none;
  cursor: pointer;
}

.sort-box select:focus {
  border-color: var(--accent);
}

/* Filter Groups */
.filter-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 10px;
  font-size: 13px;
}

.filter-label {
  color: var(--text-muted);
  width: 65px;
  flex-shrink: 0;
  padding-top: 4px;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex: 1;
}

.filter-btn {
  padding: 4px 10px;
  background-color: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-sub);
  font-size: 12px;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}

.filter-btn:hover {
  background-color: var(--bg-surface-hover);
  color: var(--text-main);
}

.filter-btn.active {
  background-color: var(--bg-subtle);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 500;
}

/* Results Header */
.results-header {
  padding: 16px 0 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.results-count strong {
  color: var(--text-main);
}

/* Main Gallery Grid */
.main-content {
  padding-bottom: 40px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

/* Card */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: border-color 0.15s, background-color 0.15s;
}

.card:hover {
  border-color: var(--border-light);
}

.card-preview-wrap {
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: var(--preview-bg);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.card-preview {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* Raw Mode Unsupported Overlay */
.unsupported-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background-color: var(--preview-bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.card-preview-wrap.is-unsupported .card-preview {
  display: none;
}

.card-preview-wrap.is-unsupported .unsupported-overlay {
  display: flex;
}

.unsupported-msg {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.unsupported-sub {
  font-size: 11px;
  color: var(--text-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.card-badge-row {
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  pointer-events: none;
}

/* Badges */
.badge {
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-weight: 500;
  line-height: 1.4;
  display: inline-block;
}

.badge-id {
  background-color: var(--badge-bg);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.badge-ext {
  background-color: var(--badge-bg);
  color: var(--text-sub);
  border: 1px solid var(--border);
}

.badge-comp {
  border: 1px solid transparent;
}

.badge-comp-lossless {
  background-color: var(--comp-lossless-bg);
  color: var(--comp-lossless-text);
  border-color: var(--comp-lossless-border);
}

.badge-comp-lossy {
  background-color: var(--comp-lossy-bg);
  color: var(--comp-lossy-text);
  border-color: var(--comp-lossy-border);
}

.badge-comp-uncompressed {
  background-color: var(--comp-uncompressed-bg);
  color: var(--comp-uncompressed-text);
  border-color: var(--comp-uncompressed-border);
}

.badge-warning {
  background-color: var(--warning-bg);
  color: var(--warning-text);
  border: 1px solid var(--warning-border);
}

/* Card Content */
.card-content {
  padding: 12px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-genre-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.card-genre {
  color: var(--text-sub);
  font-weight: 500;
}

.card-size {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-desc {
  font-size: 12px;
  color: var(--text-sub);
  line-height: 1.5;
  margin-bottom: 12px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: auto;
}

.btn {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--border);
  background-color: var(--bg-subtle);
  color: var(--text-main);
  transition: background-color 0.15s, border-color 0.15s;
}

.btn:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-light);
}

.btn-detail {
  flex: 1;
}

.btn-download {
  color: var(--text-sub);
}

.btn-download:hover {
  color: var(--text-main);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.open {
  display: flex;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
}

.modal-dialog {
  position: relative;
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 960px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.modal-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.modal-close-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-sub);
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
}

.modal-close-btn:hover {
  background-color: var(--bg-subtle);
  color: var(--text-main);
}

.modal-body {
  padding: 20px;
}

.modal-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 24px;
}

.modal-preview-side {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-img-wrap {
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: var(--preview-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.modal-preview-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.modal-unsupported-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  text-align: center;
  gap: 6px;
}

.modal-source-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.source-toggle-btn {
  flex: 1;
  padding: 6px 8px;
  font-size: 11.5px;
  background-color: var(--bg-main);
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s;
}

.source-toggle-btn.active {
  background-color: var(--bg-subtle);
  color: var(--text-main);
  font-weight: 500;
}

.source-toggle-btn:first-child {
  border-right: 1px solid var(--border);
}

.btn-download-primary {
  display: block;
  width: 100%;
  padding: 8px 12px;
  background-color: var(--accent);
  color: var(--accent-text);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s;
}

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

.modal-info-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Warning Callout */
.warning-callout {
  padding: 12px 14px;
  background-color: var(--warning-bg);
  border: 1px solid var(--warning-border);
  border-radius: var(--radius-md);
  font-size: 12.5px;
  color: var(--warning-text);
  line-height: 1.6;
}

.warning-callout-title {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
}

/* Table */
.modal-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.modal-table th,
.modal-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.modal-table th {
  width: 120px;
  color: var(--text-muted);
  font-weight: 500;
  text-align: left;
}

.modal-table td {
  color: var(--text-main);
}

.modal-table code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background-color: var(--bg-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 12px;
}

.code-block {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background-color: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-main);
}

.comp-indicator {
  font-weight: 500;
}

.comp-lossless {
  color: var(--comp-lossless-text);
}

.comp-lossy {
  color: var(--comp-lossy-text);
}

.comp-uncompressed {
  color: var(--comp-uncompressed-text);
}

.modal-description-text {
  line-height: 1.7;
}

/* Empty State */
.empty-state {
  grid-column: 1 / -1;
  padding: 48px 20px;
  text-align: center;
}

.error-state .empty-title {
  color: #f87171;
}

.empty-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.empty-desc {
  font-size: 13px;
  color: var(--text-muted);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  margin-top: 40px;
  background-color: var(--bg-surface);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
}

.footer-title {
  font-weight: 600;
  color: var(--text-sub);
}

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

/* Responsive */
@media (max-width: 860px) {
  .modal-layout {
    grid-template-columns: 1fr;
  }
  .modal-preview-side {
    max-width: 320px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    height: auto;
    padding: 10px 0;
    gap: 8px;
    align-items: flex-start;
  }
  .header-controls {
    width: 100%;
    justify-content: space-between;
  }
  .search-sort-row {
    flex-direction: column;
    align-items: stretch;
  }
  .filter-group {
    flex-direction: column;
    gap: 6px;
  }
  .filter-label {
    width: auto;
  }
  .footer-inner {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}