/* ==========================================================================
   Archivilla Premium CSS (Vanilla CSS with Custom Properties)
   ========================================================================== */

/* Design Tokens (CSS Variables) */
:root {
  /* Color Palette - Soft, Natural & Modern */
  --bg-color: #f8fafc;
  --panel-bg: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --primary: #0f766e; /* Teal */
  --primary-hover: #115e59;
  --primary-light: #ccfbf1;
  --border-color: #e2e8f0;
  --code-bg: #f1f5f9;
  --code-text: #0f172a;
  --highlight-bg: #fef08a; /* Yellow mark */
  --highlight-text: #713f12;
  
  /* Font Stacks */
  --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;

  /* Layout & Spacing */
  --container-width: 1100px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.05), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  --scrollbar-thumb: rgba(15, 118, 110, 0.2);
  --scrollbar-thumb-hover: rgba(15, 118, 110, 0.45);
}

/* Dark Mode Overrides (Automatic Support) */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #0f172a;
    --panel-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --primary: #2dd4bf; /* Teal Light */
    --primary-hover: #14b8a6;
    --primary-light: #115e59;
    --border-color: #334155;
    --code-bg: #0f172a;
    --code-text: #e2e8f0;
    --highlight-bg: #eab308;
    --highlight-text: #1c1917;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --scrollbar-thumb: rgba(45, 212, 191, 0.25);
    --scrollbar-thumb-hover: rgba(45, 212, 191, 0.5);
  }
}

/* Basic Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.7;
  padding: 2rem 1rem;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
}

/* Layout Header / Footer */
.site-header {
  margin-bottom: 2rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.back-link:hover {
  color: var(--primary-hover);
  transform: translateX(-4px);
}

.post-container {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
}

@media (max-width: 640px) {
  body {
    padding: 1rem 0.5rem;
  }
  .post-container {
    padding: 1.5rem;
    border-radius: var(--radius-md);
  }
}

.site-footer {
  margin-top: 3rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Post Meta (Header block inside article) */
.post-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.post-title {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

@media (max-width: 640px) {
  .post-title {
    font-size: 1.75rem;
  }
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.post-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.meta-icon {
  opacity: 0.7;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background-color: var(--bg-color);
  color: var(--text-secondary);
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

/* Markdown Content Elements */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 1rem;
  line-height: 1.4;
  max-width: 850px;
}

.markdown-body h1 { font-size: 1.75rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.5rem; }
.markdown-body h2 { font-size: 1.4rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.3rem; }
.markdown-body h3 { font-size: 1.2rem; }
.markdown-body h4 { font-size: 1rem; }

.markdown-body p {
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
  max-width: 850px;
}

/* Bold / Italics / Mark */
.markdown-body strong {
  font-weight: 700;
  color: var(--text-primary);
}

.markdown-body mark {
  background-color: var(--highlight-bg);
  color: var(--highlight-text);
  padding: 0.15rem 0.35rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* Lists */
.markdown-body ul,
.markdown-body ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
  max-width: 850px;
}

.markdown-body li {
  margin-bottom: 0.5rem;
}

/* Quotes */
.markdown-body blockquote {
  border-left: 4px solid var(--primary);
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-style: italic;
  background-color: var(--bg-color);
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  max-width: 850px;
}

/* Code & Pre */
.markdown-body code {
  font-family: var(--font-mono);
  background-color: var(--code-bg);
  color: var(--code-text);
  padding: 0.2rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.88em;
  font-weight: 500;
}

.markdown-body pre {
  background-color: var(--code-bg);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-color);
}

.markdown-body pre code {
  background-color: transparent;
  padding: 0;
  border-radius: 0;
  font-size: 0.9em;
  color: inherit;
  font-weight: 400;
}

/* Tables (Premium Styling) */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 2rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
  font-size: 0.95rem;
}

.markdown-body th,
.markdown-body td {
  padding: 0.75rem 1rem;
  text-align: left;
  min-width: 90px; /* 短いセルの最小幅 */
  white-space: nowrap; /* 意図しない自動改行（1文字改行）を防ぐ */
}

/* スクリプトで自動検知された長いセル列（商品名やコメント）のスタイル */
.markdown-body .col-long-text {
  min-width: 280px;
  white-space: normal;
  word-break: break-all;
}

.markdown-body th {
  background-color: var(--table-header-bg);
  color: var(--text-primary);
  font-weight: 600;
  border-bottom: 2px solid var(--border-color);
}

.markdown-body td {
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.markdown-body tr:last-child td {
  border-bottom: none;
}

.markdown-body tr:nth-child(even) {
  background-color: var(--table-stripe-bg, var(--bg-color));
}

/* Images & embeds */
.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 1.5rem 0;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.markdown-body iframe {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin: 1.5rem 0;
  background-color: var(--panel-bg);
}

/* Obsidian Callout Re-creations */
.callout {
  border-left: 4px solid var(--text-muted);
  background-color: var(--bg-color);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-sm);
}

.callout-title {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.callout-title-icon {
  margin-right: 0.5rem;
  display: flex;
  align-items: center;
}

.callout-content {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.callout-content > *:last-child {
  margin-bottom: 0;
}

/* Callout Color Variations */
.callout.info, .callout.note { border-left-color: #0284c7; }
.callout.info .callout-title-icon, .callout.note .callout-title-icon { color: #0284c7; }

.callout.todo { border-left-color: #0f766e; }
.callout.todo .callout-title-icon { color: #0f766e; }

.callout.warning, .callout.caution { border-left-color: #ea580c; }
.callout.warning .callout-title-icon, .callout.caution .callout-title-icon { color: #ea580c; }

.callout.danger, .callout.error { border-left-color: #dc2626; }
.callout.danger .callout-title-icon, .callout.error .callout-title-icon { color: #dc2626; }

.callout.success { border-left-color: #16a34a; }
.callout.success .callout-title-icon { color: #16a34a; }

.callout.example { border-left-color: #8b5cf6; }
.callout.example .callout-title-icon { color: #8b5cf6; }

/* Collapsible Callouts (using <details>) */
details.callout summary {
  cursor: pointer;
  outline: none;
  list-style: none;
}
details.callout summary::-webkit-details-marker {
  display: none;
}
details.callout .callout-title::after {
  content: '▼';
  font-size: 0.6rem;
  margin-left: auto;
  opacity: 0.5;
  transition: transform var(--transition-fast);
}
details.callout[open] .callout-title::after {
  transform: rotate(180deg);
}

/* Links & WikiLinks */
.markdown-body a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px dashed var(--primary);
  transition: color var(--transition-fast), border var(--transition-fast);
}

.markdown-body a:hover {
  color: var(--primary-hover);
  border-bottom-style: solid;
}

/* Portal Index Styles */
.portal-title {
  font-size: 2.5rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 2.5rem;
  letter-spacing: -0.03em;
}

.portal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.portal-card {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

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

.portal-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
  gap: 1rem;
}

.portal-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}

.portal-card-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.portal-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.portal-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

/* Ensure color styling on parent spans inherits down to text-formatting elements */
.markdown-body [style*="color"] strong,
.markdown-body [style*="color"] em,
.markdown-body [style*="color"] code,
.markdown-body [style*="color"] mark {
  color: inherit;
}

/* Custom Scrollbars (Webkit/Blink) */
::-webkit-scrollbar {
  width: 8px; /* 縦スクロールバーの幅 */
  height: 8px; /* 横スクロールバーの高さ */
}

::-webkit-scrollbar-track {
  background: transparent; /* トラック（背景）は透明 */
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 8px;
  border: 2px solid transparent; /* トラックとツマミの間に少し余白を作る */
  background-clip: padding-box; /* 余白を適用するための指定 */
  transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
  border: 2px solid transparent;
  background-clip: padding-box;
}

/* Firefox Support */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) transparent;
}