/* free-for-dev — tech theme
 * Scene: late-night engineer scanning free-tier services, eyes terminal-tired.
 * Register: product. Color strategy: restrained (tinted neutrals + warm amber + cool teal link).
 * No pure #000 / #fff. All OKLCH. No side-stripe borders. No gradient text.
 */

/* ---------- Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ---------- Tokens (dark, default) ---------- */
:root,
html[data-theme="dark"] {
  --bg-base:       oklch(0.165 0.012 250);
  --bg-elevated:   oklch(0.215 0.013 250);
  --bg-subtle:     oklch(0.265 0.011 250);
  --bg-inline:     oklch(0.235 0.014 250);

  --text-strong:   oklch(0.955 0.008 80);
  --text-base:     oklch(0.860 0.008 80);
  --text-muted:    oklch(0.640 0.010 80);
  --text-faint:    oklch(0.480 0.010 80);

  --accent-warm:   oklch(0.795 0.130 65);   /* amber — emphasis */
  --accent-warm-d: oklch(0.560 0.090 65);
  --accent-cool:   oklch(0.760 0.105 205);  /* teal — links */
  --accent-cool-d: oklch(0.540 0.080 205);

  --border-subtle: oklch(0.300 0.012 250);
  --border-strong: oklch(0.420 0.013 250);

  --selection:     oklch(0.560 0.110 65 / 0.40);
  --shadow-inset:  inset 0 1px 0 oklch(1 0 0 / 0.04);

  --font-sans: 'Inter', 'Source Sans 3', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

/* ---------- Tokens (light) ---------- */
html[data-theme="light"] {
  --bg-base:       oklch(0.985 0.005 80);
  --bg-elevated:   oklch(0.955 0.008 80);
  --bg-subtle:     oklch(0.920 0.010 80);
  --bg-inline:     oklch(0.935 0.012 80);

  --text-strong:   oklch(0.200 0.012 250);
  --text-base:     oklch(0.310 0.011 250);
  --text-muted:    oklch(0.500 0.010 250);
  --text-faint:    oklch(0.620 0.009 250);

  --accent-warm:   oklch(0.530 0.135 55);
  --accent-warm-d: oklch(0.420 0.110 55);
  --accent-cool:   oklch(0.500 0.130 220);
  --accent-cool-d: oklch(0.400 0.110 220);

  --border-subtle: oklch(0.880 0.012 250);
  --border-strong: oklch(0.760 0.013 250);

  --selection:     oklch(0.530 0.135 55 / 0.20);
  --shadow-inset:  inset 0 1px 0 oklch(0 0 0 / 0.03);
}

/* ---------- Base ---------- */
html, body {
  background: var(--bg-base);
  color: var(--text-base);
  font-family: var(--font-sans);
  font-feature-settings: "cv11", "ss01", "ss03";
  font-size: 15.5px;
  line-height: 1.7;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 320ms cubic-bezier(0.22, 1, 0.36, 1),
              color 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

::selection { background: var(--selection); color: var(--text-strong); }

/* Subtle scrollbar — webkit only, non-intrusive */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 999px;
  border: 2px solid var(--bg-base);
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-warm-d); }

/* ---------- App shell ---------- */
.app-name a, .app-name {
  color: var(--text-strong) !important;
  font-family: var(--font-mono) !important;
  font-weight: 500 !important;
  letter-spacing: -0.01em;
}
.app-name::before {
  content: "▸ ";
  color: var(--accent-warm);
  font-weight: 600;
}

/* ---------- Sidebar ---------- */
.sidebar {
  background: var(--bg-base) !important;
  border-right: 1px solid var(--border-subtle) !important;
  padding-top: 24px;
}

.sidebar > h1 { margin-bottom: 28px; }

.sidebar-nav {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  padding: 0 24px 80px;
}

.sidebar-nav ul { padding-left: 14px; }
.sidebar-nav ul ul { padding-left: 18px; border-left: 1px solid var(--border-subtle); margin-left: 4px; }

.sidebar-nav li {
  margin: 2px 0;
  position: relative;
}

.sidebar-nav li > a {
  color: var(--text-muted) !important;
  text-decoration: none !important;
  display: inline-block;
  padding: 4px 8px;
  border-radius: 5px;
  transition: color 180ms cubic-bezier(0.22, 1, 0.36, 1),
              background 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.sidebar-nav li > a:hover {
  color: var(--text-strong) !important;
  background: var(--bg-elevated);
}

.sidebar-nav li.active > a,
.sidebar-nav li > a.active {
  color: var(--accent-warm) !important;
  background: transparent !important;
  font-weight: 500;
}

.sidebar-nav li.active > a::before {
  content: "›";
  position: absolute;
  left: -2px;
  color: var(--accent-warm);
  font-weight: 600;
}

/* ---------- Content typography ---------- */
.markdown-section {
  max-width: 860px;
  padding: 48px 56px 120px;
  color: var(--text-base);
}

.markdown-section h1,
.markdown-section h2,
.markdown-section h3,
.markdown-section h4,
.markdown-section h5,
.markdown-section h6 {
  color: var(--text-strong);
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.markdown-section h1 {
  font-size: 2.6rem;
  font-weight: 700;
  margin: 8px 0 28px;
  color: var(--text-strong);
  letter-spacing: -0.03em;
}

.markdown-section h2 {
  font-size: 1.7rem;
  margin: 64px 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.markdown-section h2::before {
  content: "§";
  font-family: var(--font-mono);
  color: var(--accent-warm);
  font-size: 1.1rem;
  font-weight: 500;
}

.markdown-section h3 {
  font-size: 1.22rem;
  margin: 40px 0 12px;
  color: var(--text-strong);
}

.markdown-section h3::before {
  content: "·";
  color: var(--accent-warm);
  margin-right: 8px;
  font-weight: 700;
}

.markdown-section h4 {
  font-size: 1.05rem;
  margin: 28px 0 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.markdown-section p, .markdown-section li {
  font-size: 15.5px;
  line-height: 1.72;
}

.markdown-section p { margin: 0 0 14px; }

.markdown-section strong { color: var(--text-strong); font-weight: 600; }
.markdown-section em { color: var(--text-strong); font-style: italic; }

/* ---------- Links ---------- */
.markdown-section a {
  color: var(--accent-cool);
  text-decoration: underline;
  text-decoration-color: oklch(from var(--accent-cool) l c h / 0.35);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 180ms cubic-bezier(0.22, 1, 0.36, 1),
              text-decoration-color 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.markdown-section a:hover {
  color: var(--accent-warm);
  text-decoration-color: var(--accent-warm);
}

/* External-link cue — quiet, monospace */
.markdown-section a[href^="http"]:not([href*="googlestudio.xyz"]):not([href^="#"])::after {
  content: " ↗";
  font-family: var(--font-mono);
  color: var(--text-faint);
  font-size: 0.85em;
  margin-left: 1px;
}

/* ---------- Lists ---------- */
.markdown-section ul, .markdown-section ol {
  padding-left: 22px;
  margin: 12px 0 18px;
}

.markdown-section li { margin: 6px 0; }

.markdown-section ul > li::marker {
  color: var(--accent-warm-d);
  font-size: 0.9em;
}

.markdown-section ol > li::marker {
  color: var(--accent-warm-d);
  font-family: var(--font-mono);
  font-weight: 500;
}

/* ---------- Code ---------- */
.markdown-section code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  font-weight: 500;
  background: var(--bg-inline);
  color: var(--accent-warm);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}

.markdown-section pre {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 18px 20px;
  margin: 18px 0;
  box-shadow: var(--shadow-inset);
  overflow-x: auto;
  position: relative;
}

.markdown-section pre > code {
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  color: var(--text-base) !important;
  font-size: 13.5px;
  line-height: 1.65;
}

.markdown-section pre::before {
  content: attr(data-lang);
  position: absolute;
  top: 8px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-faint);
  text-transform: lowercase;
  letter-spacing: 0.04em;
}

/* ---------- Blockquotes — README uses these as service descriptions, so they appear a LOT.
   No side-stripe. Tint + small mono prefix instead. ---------- */
.markdown-section blockquote {
  background: var(--bg-elevated);
  border: none !important;
  border-radius: 6px;
  padding: 14px 18px 14px 38px;
  margin: 10px 0 18px;
  color: var(--text-base);
  font-style: normal;
  position: relative;
  box-shadow: var(--shadow-inset);
}

.markdown-section blockquote::before {
  content: "»";
  position: absolute;
  left: 14px;
  top: 12px;
  font-family: var(--font-mono);
  color: var(--accent-warm);
  font-weight: 500;
  font-size: 1rem;
}

.markdown-section blockquote p { margin: 0; }
.markdown-section blockquote + blockquote { margin-top: 6px; }

/* Drop the legacy "first blockquote tinted green" rule from index.html — we own this now */

/* ---------- Tables ---------- */
.markdown-section table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14px;
}

.markdown-section table th {
  background: var(--bg-elevated);
  color: var(--text-strong);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-strong);
}

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

.markdown-section table tr:hover td { background: var(--bg-elevated); }

/* ---------- Horizontal rule ---------- */
.markdown-section hr {
  border: none;
  height: 1px;
  background: var(--border-subtle);
  margin: 48px 0;
}

/* ---------- Search ---------- */
.search {
  margin: 0 24px 24px !important;
  padding: 0 !important;
  border-bottom: none !important;
}

.search input {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border-subtle) !important;
  border-radius: 6px !important;
  color: var(--text-base) !important;
  font-family: var(--font-mono) !important;
  font-size: 13px !important;
  padding: 10px 14px 10px 32px !important;
  width: 100% !important;
  transition: border-color 180ms cubic-bezier(0.22, 1, 0.36, 1) !important;
}

.search { position: relative; }
.search::before {
  content: "⌕";
  position: absolute;
  left: 36px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 15px;
  pointer-events: none;
  z-index: 1;
}

.search input:focus {
  border-color: var(--accent-warm) !important;
  outline: none !important;
  box-shadow: 0 0 0 3px oklch(from var(--accent-warm) l c h / 0.15) !important;
}

.search .results-panel {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  margin-top: 6px;
}

.search .matching-post {
  border-bottom: 1px solid var(--border-subtle) !important;
  padding: 12px 14px !important;
}
.search .matching-post:last-child { border-bottom: none !important; }

.search .matching-post h2 {
  color: var(--accent-cool) !important;
  font-size: 14px !important;
  font-family: var(--font-sans) !important;
  border: none !important;
  padding: 0 !important;
  margin: 0 0 4px !important;
}
.search .matching-post h2::before { content: none !important; }

.search .matching-post .search-keyword {
  background: oklch(from var(--accent-warm) l c h / 0.25) !important;
  color: var(--accent-warm) !important;
  padding: 1px 3px;
  border-radius: 3px;
}

.search .matching-post p {
  color: var(--text-muted) !important;
  font-size: 13px !important;
}

/* ---------- Darklight theme toggle button override ---------- */
.docsify-darklight-theme {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border-subtle) !important;
  border-radius: 999px !important;
  box-shadow: var(--shadow-inset) !important;
}

/* ---------- Mobile ---------- */
@media (max-width: 768px) {
  .markdown-section {
    padding: 32px 22px 80px;
  }
  .markdown-section h1 { font-size: 2rem; }
  .markdown-section h2 { font-size: 1.4rem; margin-top: 48px; }
  .markdown-section h3 { font-size: 1.1rem; }
  .sidebar-nav { padding: 0 18px 80px; }
}