/* Montage Concord documentation — shared styles */

:root {
  --bg:          #0f1117;
  --surface:     #1a1d27;
  --surface2:    #22263a;
  --border:      #2e3452;
  --text:        #dde1f0;
  --text-muted:  #8890b0;
  --accent:      #5b8dee;
  --accent-dim:  #3a62c0;
  --green:       #4ade80;
  --yellow:      #fbbf24;
  --orange:      #fb923c;
  --red:         #f87171;
  --purple:      #a78bfa;
  --teal:        #2dd4bf;
  --nav-width:   250px;
  --content-max: 860px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
  line-height: 1.65;
  font-size: 15px;
}

/* ── Navigation ─────────────────────────────────────────────────────────── */

nav {
  width: var(--nav-width);
  min-width: var(--nav-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 1.5rem 0 2rem;
  flex-shrink: 0;
}

nav .nav-logo {
  padding: 0 1.25rem 1.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}
nav .nav-logo a {
  color: var(--text);
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
nav .nav-logo span { color: var(--accent); }

nav .nav-section {
  margin-bottom: 0.25rem;
}
nav .nav-section-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 0.75rem 1.25rem 0.25rem;
}
nav a {
  display: block;
  padding: 0.3rem 1.25rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  border-left: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
nav a:hover { color: var(--text); }
nav a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(91,141,238,0.08);
}

/* ── Page content ───────────────────────────────────────────────────────── */

main {
  flex: 1;
  padding: 2.5rem 3rem;
  max-width: calc(var(--content-max) + 6rem);
}

article { max-width: var(--content-max); }

h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 0.4rem;
}
h1 + .subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 2rem;
}

h2 {
  font-size: 1.3rem;
  font-weight: 650;
  color: var(--text);
  margin: 2.5rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

h3 {
  font-size: 1.05rem;
  font-weight: 650;
  color: var(--text);
  margin: 1.5rem 0 0.5rem;
}

h4 {
  font-size: 0.9rem;
  font-weight: 650;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 1.25rem 0 0.4rem;
}

p { margin-bottom: 0.9rem; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

ul, ol {
  margin: 0.5rem 0 0.9rem 1.5rem;
}
li { margin-bottom: 0.25rem; }

strong { color: var(--text); font-weight: 650; }

/* ── Code ───────────────────────────────────────────────────────────────── */

code {
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
  font-size: 0.85em;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  color: var(--teal);
}

pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1rem 0 1.25rem;
}
pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.875rem;
  color: var(--text);
  line-height: 1.7;
}

/* Syntax-like coloring via CSS classes */
.kw { color: var(--purple); }   /* keywords: def, class, return */
.tp { color: var(--accent); }   /* types */
.st { color: var(--green); }    /* strings */
.cm { color: var(--text-muted); font-style: italic; } /* comments */
.nm { color: var(--orange); }   /* names / identifiers */
.nb { color: var(--teal); }     /* builtins / numbers */

/* ── Cards ──────────────────────────────────────────────────────────────── */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
  text-decoration: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-dim);
  text-decoration: none;
}
.card-tag {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.card-title {
  font-size: 0.95rem;
  font-weight: 650;
  color: var(--text);
  margin-bottom: 0.3rem;
}
.card-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── API reference blocks ───────────────────────────────────────────────── */

.api-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin: 1rem 0 1.25rem;
  overflow: hidden;
}
.api-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}
.api-method {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}
.get  { background: rgba(77,222,128,0.15); color: var(--green); }
.post { background: rgba(251,191,36,0.15); color: var(--yellow); }
.fn   { background: rgba(91,141,238,0.15); color: var(--accent); }
.cls  { background: rgba(167,139,250,0.15); color: var(--purple); }
.prop { background: rgba(45,212,191,0.15);  color: var(--teal); }

.api-path {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.9rem;
  color: var(--text);
}
.api-body { padding: 0.75rem 1rem; font-size: 0.88rem; }
.api-body p { margin-bottom: 0.5rem; }
.api-body table { width: 100%; font-size: 0.83rem; border-collapse: collapse; }
.api-body th { color: var(--text-muted); font-weight: 600; text-align: left; padding: 0.25rem 0.5rem 0.25rem 0; border-bottom: 1px solid var(--border); }
.api-body td { padding: 0.3rem 0.5rem 0.3rem 0; vertical-align: top; border-bottom: 1px solid rgba(46,52,82,0.4); }
.api-body td:first-child { color: var(--teal); font-family: monospace; }
.api-body td:nth-child(2) { color: var(--purple); width: 110px; }

/* ── Callout boxes ──────────────────────────────────────────────────────── */

.callout {
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1rem 0 1.25rem;
  border-left: 3px solid;
  font-size: 0.9rem;
}
.callout-note  { background: rgba(91,141,238,0.08); border-color: var(--accent); }
.callout-tip   { background: rgba(77,222,128,0.08); border-color: var(--green); }
.callout-warn  { background: rgba(251,191,36,0.08); border-color: var(--yellow); }
.callout-key   { background: rgba(167,139,250,0.08); border-color: var(--purple); }
.callout strong { display: block; margin-bottom: 0.25rem; }
.callout-note  strong { color: var(--accent); }
.callout-tip   strong { color: var(--green); }
.callout-warn  strong { color: var(--yellow); }
.callout-key   strong { color: var(--purple); }

/* ── Mermaid diagram overrides ──────────────────────────────────────────── */

pre.mermaid {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  margin: 1rem 0 1.25rem;
  text-align: center;
}

/* ── Flow diagram ───────────────────────────────────────────────────────── */

.flow {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 1rem 0 1.5rem;
}
.flow-step {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.flow-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-left: 1.125rem;
}
.flow-connector-line {
  width: 2px;
  height: 1rem;
  background: var(--border);
}
.flow-node {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 0;
}
.flow-number {
  width: 1.5rem;
  height: 1.5rem;
  min-width: 1.5rem;
  background: var(--accent-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: white;
  margin-top: 0.6rem;
}
.flow-title { font-weight: 650; color: var(--text); font-size: 0.9rem; margin-bottom: 0.2rem; }
.flow-detail { font-size: 0.82rem; color: var(--text-muted); }
.flow-arrow {
  text-align: center;
  color: var(--border);
  font-size: 1.2rem;
  line-height: 1;
  margin: 0.1rem 0 0.1rem 0.6rem;
}

/* ── Tables ─────────────────────────────────────────────────────────────── */

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 0.75rem 0 1.25rem;
}
.data-table th {
  text-align: left;
  color: var(--text-muted);
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.data-table td {
  padding: 0.45rem 0.75rem;
  border-bottom: 1px solid rgba(46,52,82,0.4);
  vertical-align: top;
}
.data-table td:first-child { color: var(--teal); font-family: monospace; font-size: 0.83rem; }
.data-table tr:last-child td { border-bottom: none; }

/* ── Breadcrumb ─────────────────────────────────────────────────────────── */

.breadcrumb {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  gap: 0.4rem;
  align-items: center;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb .sep { color: var(--border); }

/* ── Badge / pill ───────────────────────────────────────────────────────── */

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 12px;
  vertical-align: middle;
}
.badge-impl { background: rgba(77,222,128,0.15); color: var(--green); }
.badge-planned { background: rgba(251,191,36,0.12); color: var(--yellow); }
.badge-mvp { background: rgba(91,141,238,0.15); color: var(--accent); }

/* ── Misc ───────────────────────────────────────────────────────────────── */

hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

.text-muted { color: var(--text-muted); }
.monospace  { font-family: monospace; }

/* ── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  body { flex-direction: column; }
  nav { width: 100%; height: auto; position: static; border-right: none; border-bottom: 1px solid var(--border); }
  main { padding: 1.5rem; }
}