/* Impreza Host — tutorials section shared styles.
   Design tokens mirror docs/index.html so the section feels native. */
:root {
    --bg: #0d0d1a;
    --bg-card: #141B1E;
    --bg-card-hover: #1a2226;
    --border: #2a3035;
    --border-strong: #363B3F;
    --accent: #00BF80;
    --accent-soft: rgba(0, 191, 128, 0.1);
    --text: #e8ecf0;
    --text-muted: #c8cdd2;
    --text-dim: #808890;
    --warn: #FCD34D;
    --code-bg: #0a0a14;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text-muted);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre {
    font-family: 'JetBrains Mono', 'SF Mono', Consolas, Menlo, monospace;
    font-size: 13px;
}
code { background: var(--code-bg); padding: 2px 6px; border-radius: 4px; color: #ffd866; }
pre {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 18px;
    overflow-x: auto;
    color: var(--text-muted);
    line-height: 1.55;
}
pre code { background: transparent; padding: 0; color: inherit; }
h1, h2, h3, h4 { color: var(--text); font-weight: 600; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 14px; }
h2 { font-size: 24px; margin: 48px 0 16px; padding-bottom: 10px; border-bottom: 2px solid var(--accent); }
h2 .anchor { color: var(--text-dim); font-weight: 400; font-size: 14px; margin-left: 8px; text-decoration: none; opacity: 0; transition: opacity 0.15s; }
h2:hover .anchor { opacity: 1; }
h3 { font-size: 18px; margin: 28px 0 12px; }
p { margin: 0 0 14px; }
ul, ol { padding-left: 24px; }
li { margin-bottom: 6px; }
hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }
kbd {
    display: inline-block; padding: 2px 6px; border: 1px solid var(--border-strong);
    border-radius: 4px; background: var(--bg-card); font-size: 12px;
    font-family: 'JetBrains Mono', monospace; color: var(--text);
}

/* Header */
.iapi-topbar {
    background: linear-gradient(135deg, #0d0d1a 0%, #1a1a2e 50%, #0d0d1a 100%);
    border-bottom: 2px solid var(--accent);
    padding: 24px 20px;
}
.iapi-topbar-inner {
    max-width: 1100px; margin: 0 auto;
    display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
}
.iapi-topbar img { height: 32px; }
.iapi-topbar nav { display: flex; gap: 18px; flex-wrap: wrap; margin-left: auto; }
.iapi-topbar nav a { color: var(--text-muted); font-size: 13px; padding: 6px 12px; border-radius: 6px; }
.iapi-topbar nav a:hover { background: var(--bg-card); text-decoration: none; }
.iapi-topbar nav a.cta { background: var(--accent); color: var(--bg); }
.iapi-topbar nav a.cta:hover { background: #00d990; }

/* Layout */
.iapi-layout {
    max-width: 1100px; margin: 0 auto;
    display: grid; grid-template-columns: 220px 1fr;
    gap: 40px; padding: 32px 20px 80px;
}
.iapi-layout.no-toc { grid-template-columns: 1fr; max-width: 820px; }
@media (max-width: 900px) {
    .iapi-layout { grid-template-columns: 1fr; }
    .iapi-toc { position: static !important; }
}
.iapi-toc {
    position: sticky; top: 24px; align-self: start;
    font-size: 13px; max-height: calc(100vh - 48px); overflow-y: auto;
}
.iapi-toc h4 {
    font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px;
    color: var(--text-dim); margin: 0 0 12px;
}
.iapi-toc ul { list-style: none; padding: 0; margin: 0 0 20px; }
.iapi-toc li { margin: 0; }
.iapi-toc a {
    display: block; color: var(--text-dim); padding: 5px 10px;
    border-left: 2px solid transparent; border-radius: 0 4px 4px 0;
}
.iapi-toc a:hover { color: var(--text); background: var(--bg-card); text-decoration: none; }
.iapi-toc a.is-sub { padding-left: 22px; font-size: 12px; }

/* Breadcrumb */
.iapi-crumb { font-size: 13px; color: var(--text-dim); margin: 0 0 18px; }
.iapi-crumb a { color: var(--text-muted); }
.iapi-crumb span { margin: 0 6px; opacity: 0.6; }

/* Eyebrow chip */
.iapi-eyebrow {
    display: inline-block;
    color: var(--accent); font-size: 11px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 1.5px;
    padding: 4px 12px; background: var(--accent-soft);
    border-radius: 100px; margin-bottom: 14px;
}
.iapi-lede { color: var(--text-muted); font-size: 16px; margin: 0 0 8px; }

/* Hero (index) */
.iapi-hero {
    background: linear-gradient(135deg, var(--bg-card) 0%, #1a2b25 100%);
    border: 1px solid var(--accent);
    border-radius: 14px;
    padding: 36px 28px;
    margin-bottom: 40px;
}
.iapi-hero h1 { color: var(--text); }
.iapi-hero p { color: var(--text-muted); font-size: 16px; margin: 0; }

/* Tutorial card grid (index) */
.tut-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 16px 0; }
@media (max-width: 700px) { .tut-grid { grid-template-columns: 1fr; } }
.tut-card {
    display: block; background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 10px; padding: 20px; text-decoration: none;
    transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.tut-card:hover {
    border-color: var(--accent); background: var(--bg-card-hover);
    text-decoration: none; transform: translateY(-2px);
}
.tut-card .num {
    display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 1px;
    color: var(--accent); background: var(--accent-soft);
    padding: 3px 9px; border-radius: 100px; margin-bottom: 10px;
}
.tut-card h3 { margin: 0 0 6px; font-size: 17px; }
.tut-card p { margin: 0; color: var(--text-dim); font-size: 13px; }
.tut-card .meta { margin-top: 12px; font-size: 12px; color: var(--text-dim); }

/* Tables */
table { border-collapse: collapse; width: 100%; margin: 14px 0; }
th, td {
    padding: 10px 12px; text-align: left;
    border-bottom: 1px solid var(--border); font-size: 14px;
}
th { color: var(--text); font-weight: 600; background: var(--bg-card); }
td code { font-size: 12px; }

/* Callout boxes */
.iapi-note {
    background: rgba(0,191,128,0.05);
    border-left: 3px solid var(--accent);
    border-radius: 0 8px 8px 0;
    padding: 12px 16px; margin: 16px 0;
    color: var(--text-muted); font-size: 14px;
}
.iapi-note.warn { background: rgba(252,211,77,0.05); border-color: var(--warn); }
.iapi-note.tip  { background: rgba(0,191,128,0.05); border-color: var(--accent); }
.iapi-note strong { color: var(--text); }

/* ASCII diagram block */
.iapi-diagram {
    background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px;
    padding: 16px 18px; overflow-x: auto; color: var(--text-dim);
    font-family: 'JetBrains Mono', monospace; font-size: 12px; line-height: 1.5;
    white-space: pre; margin: 16px 0;
}

/* Prev/next */
.iapi-prevnext {
    display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
    margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border);
}
.iapi-prevnext a {
    flex: 1 1 240px; background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 10px; padding: 14px 18px; text-decoration: none;
}
.iapi-prevnext a:hover { border-color: var(--accent); text-decoration: none; }
.iapi-prevnext .dir { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-dim); }
.iapi-prevnext .ttl { color: var(--text); font-size: 14px; font-weight: 600; }
.iapi-prevnext a.next { text-align: right; }

/* Footer */
.iapi-footer {
    border-top: 1px solid var(--border); margin-top: 60px; padding: 24px 20px;
    color: var(--text-dim); font-size: 13px; text-align: center;
}
.iapi-footer a { color: var(--text-muted); margin: 0 10px; }