/* Trabot blog posts — shared styles */

:root {
  --bg-primary: #FAFAF7;
  --bg-white: #FFFFFF;
  --bg-alt: #F5F4F0;
  --text-primary: #1A1A1F;
  --text-body: #3D3D44;
  --text-muted: #7A7A82;
  --text-subtle: #A5A5AD;
  --accent: #B8963E;
  --accent-dark: #96782F;
  --accent-glow: rgba(184, 150, 62, 0.06);
  --green: #3D8B6A;
  --red: #C0524F;
  --red-dark: #9B3F3C;
  --red-glow: rgba(192, 82, 79, 0.05);
  --border: #E5E4DF;
  --border-subtle: #EFEEE9;
  --border-soft: #D4D3CD;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 17px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(184, 150, 62, 0.15);
}

/* ——— Nav ——— */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  height: 60px;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.nav-logo img {
  width: 46px;
  height: auto;
}

.nav-logo-text {
  font-family: 'Merriweather', serif;
  font-size: 20px;
  font-weight: 300;
  line-height: 1;
  color: #222;
}

.nav-sep {
  color: var(--border-soft);
  margin: 0 8px;
}

.nav-blog {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.nav-blogs {
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  text-decoration: none;
  text-transform: lowercase;
}

.nav-blogs:hover {
  color: var(--accent);
}

/* ——— Hero ——— */
.hero {
  max-width: 780px;
  margin: 0 auto;
  padding: 140px 24px 60px;
}

.hero-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 2.5px;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 20px;
}

.hero h1,
.hero > h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.15;
  color: var(--text-primary);
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-excerpt {
  font-size: 19px;
  color: var(--text-muted);
  line-height: 1.7;
  font-family: 'Source Serif 4', serif;
  font-style: italic;
}

.hero-meta {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--text-subtle);
  letter-spacing: 0.5px;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-meta span {
  white-space: nowrap;
}

/* ——— Content ——— */
.content {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 24px 100px;
}

.content p {
  margin-bottom: 20px;
  color: var(--text-body);
}

.content p strong,
.content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.content p em,
.content em {
  color: var(--text-body);
  font-style: italic;
}

.content h2,
h2 {
  font-family: 'Playfair Display', serif;
  font-size: 28px;
  color: var(--text-primary);
  font-weight: 700;
  margin: 56px 0 16px;
  line-height: 1.25;
}

.content h3,
h3 {
  font-family: 'Playfair Display', serif;
  font-size: 22px;
  color: var(--text-primary);
  font-weight: 700;
  margin: 40px 0 12px;
  line-height: 1.3;
}

.content ul,
.content ol {
  margin: 20px 0 28px 22px;
  color: var(--text-body);
}

.content li {
  margin-bottom: 10px;
  padding-left: 6px;
  line-height: 1.75;
}

.content li strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ——— Callouts ——— */
.callout {
  background: var(--accent-glow);
  border-left: 3px solid var(--accent);
  padding: 20px 24px;
  margin: 32px 0;
  border-radius: 0 10px 10px 0;
}

.callout p {
  margin: 0 0 12px;
  color: var(--text-body);
  font-size: 16px;
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout strong {
  color: var(--accent-dark);
}

.callout p + p {
  margin-top: 14px;
}

.callout-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 2.5px;
  color: var(--accent-dark);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 10px;
}

.callout-warn {
  background: var(--red-glow);
  border-left: 3px solid var(--red);
  padding: 20px 24px;
  margin: 32px 0;
  border-radius: 0 10px 10px 0;
}

.callout-warn p {
  margin: 0 0 12px;
  color: var(--text-body);
  font-size: 16px;
}

.callout-warn p:last-child {
  margin-bottom: 0;
}

.callout-warn strong {
  color: var(--red-dark);
}

.callout-warn .callout-label {
  color: var(--red-dark);
}

.callout-disclaimer {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 18px 22px;
  margin: 48px 0 0;
  border-radius: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-muted);
}

.callout-disclaimer strong {
  color: var(--text-body);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 11px;
}

.disclaimer {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  margin: 48px 0 0;
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.7;
  font-family: 'Source Serif 4', serif;
  font-style: italic;
}

/* ——— Diagrams ——— */
.diagram-container {
  margin: 40px 0;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 24px;
  overflow-x: auto;
}

.diagram-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 20px;
  text-align: center;
}

.diagram-caption {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--text-subtle);
  text-align: center;
  margin-top: 16px;
  line-height: 1.6;
}

.diagram-container svg {
  display: block;
  width: 100%;
  max-width: 700px;
  height: auto;
  margin: 0 auto;
}

/* ——— Stage cards ——— */
.stage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 40px 0;
}

.stage-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.stage-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 8px;
}

.stage-title {
  font-family: 'Playfair Display', serif;
  font-size: 17px;
  color: var(--text-primary);
  font-weight: 700;
  margin-bottom: 8px;
}

.stage-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ——— Comparison cards ——— */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 40px 0;
}

.comparison-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.comparison-card.bad {
  border-color: #E8C4C4;
}

.comparison-card.good {
  border-color: #B8D4C8;
}

.comparison-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 12px;
}

.comparison-card.bad .comparison-label {
  color: var(--red);
}

.comparison-card.good .comparison-label {
  color: var(--green);
}

/* ——— Formula ——— */
.formula {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 24px;
  margin: 32px 0;
  text-align: center;
}

.formula-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 18px;
}

.formula-equation {
  font-family: 'JetBrains Mono', monospace;
  font-size: 18px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.6;
}

.formula-equation .var {
  color: var(--accent-dark);
}

.formula-equation .op {
  color: var(--text-subtle);
  padding: 0 5px;
}

.formula-note {
  margin-top: 18px;
  font-family: 'Source Serif 4', serif;
  font-size: 14px;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.6;
  text-align: left;
  padding: 16px 0 0;
  border-top: 1px solid var(--border-subtle);
}

.formula-legend {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  color: var(--text-muted);
  margin-top: 14px;
  line-height: 1.7;
  text-align: left;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.formula-components {
  text-align: left;
  margin-top: 18px;
  padding: 16px 0 0;
  border-top: 1px solid var(--border-subtle);
  font-family: 'Source Serif 4', serif;
  font-size: 14.5px;
  color: var(--text-body);
  line-height: 1.75;
}

.formula-components .comp {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.formula-components .comp-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--accent-dark);
  font-weight: 500;
  min-width: 84px;
  flex-shrink: 0;
}

/* ——— Data tables ——— */
.data-table-wrap {
  margin: 32px 0;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  overflow-x: auto;
}

/* Wrapper div containing a table */
.data-table:not(table) {
  margin: 32px 0;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  overflow-x: auto;
}

.data-table-wrap .data-table,
table.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
  background: transparent;
  border: none;
  border-radius: 0;
}

.data-table table {
  width: 100%;
  border-collapse: collapse;
}

.data-table thead,
table.data-table thead {
  background: var(--bg-alt);
}

.data-table th,
table.data-table th {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 1.5px;
  color: var(--accent);
  text-transform: uppercase;
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-weight: 500;
  white-space: nowrap;
}

.data-table td,
table.data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-body);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13.5px;
  vertical-align: top;
}

.data-table td:first-child,
table.data-table td:first-child {
  color: var(--text-primary);
  font-family: 'Source Serif 4', serif;
  font-size: 15px;
  font-weight: 500;
}

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

.data-table tbody tr:hover,
table.data-table tbody tr:hover {
  background: rgba(184, 150, 62, 0.03);
}

.v-green {
  color: var(--green);
  font-weight: 500;
}

.v-red {
  color: var(--red);
  font-weight: 500;
}

.v-gold {
  color: var(--accent-dark);
  font-weight: 500;
}

.v-muted,
.v-mute {
  color: var(--text-muted);
  font-weight: 500;
}

/* ——— Footer ——— */
.footer {
  max-width: 780px;
  margin: 0 auto;
  padding: 40px 24px 60px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-subtle);
  line-height: 1.8;
  margin: 0;
}

/* ——— Responsive ——— */
@media (max-width: 640px) {
  .hero {
    padding-top: 120px;
  }

  .hero h1,
  .hero > h1 {
    font-size: 34px;
  }

  .hero-excerpt {
    font-size: 17px;
  }

  .content h2,
  h2 {
    font-size: 24px;
    margin-top: 44px;
  }

  .content h3,
  h3 {
    font-size: 19px;
  }

  .content {
    padding: 0 20px 80px;
  }

  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .formula-equation {
    font-size: 15px;
  }

  .data-table th,
  .data-table td,
  table.data-table th,
  table.data-table td {
    padding: 12px 14px;
    font-size: 12.5px;
  }
}