/* ============================================================
 * brand-guidelines-v3.css — page-specific layout for V3 doc
 * Always renders in Saigon Hospitality theme (forced by JSX).
 * ============================================================ */

.bg-page {
    background: var(--color-cream);
    color: var(--color-dark);
    min-height: 100vh;
}

/* ----- Doc hero ----- */
.bg-hero {
    padding: 80px 40px 64px;
    background:
        radial-gradient(900px 500px at 8% 0%, rgba(200, 160, 87, 0.18) 0%, rgba(245, 239, 227, 0) 60%),
        var(--color-cream);
    border-bottom: 1px solid var(--color-divider);
}
.bg-hero-inner {
    max-width: 1100px;
    margin: 0 auto;
}
.bg-hero .doc-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
    font-family: var(--font-body);
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-gold-deep);
}
.bg-hero .doc-meta .v {
    background: var(--color-navy);
    color: var(--color-yellow);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.08em;
}
.bg-hero h1 {
    font-family: var(--font-heading);
    font-weight: 800;
    font-style: italic;
    font-size: 64px;
    line-height: 1.04;
    letter-spacing: -0.02em;
    color: var(--color-dark);
    margin: 0 0 24px;
    max-width: 800px;
}
.bg-hero .swipe::after {
    background: var(--color-yellow);
}
.bg-hero p.lead {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.6;
    color: var(--color-body);
    max-width: 720px;
    margin: 0 0 28px;
}
.bg-toc {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 32px;
}
.bg-toc a {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    padding: 10px 18px;
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--color-navy);
    border-bottom: 1px solid var(--color-border);
    transition: all 250ms ease;
}
.bg-toc a:hover {
    background: var(--color-navy);
    color: var(--color-cream);
    border-color: var(--color-navy);
}

/* ----- Section base ----- */
.bg-section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 80px 40px;
    border-bottom: 1px solid var(--color-divider);
}
.bg-section:last-of-type { border-bottom: 0; }
.bg-section h2 {
    font-family: var(--font-heading);
    font-weight: 800;
    font-style: italic;
    font-size: 36px;
    line-height: 1.1;
    color: var(--color-navy);
    margin: 0 0 8px;
    letter-spacing: -0.01em;
}
.bg-section .section-eye {
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-gold-deep);
    margin-bottom: 12px;
}
.bg-section .section-sub {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--color-body);
    margin: 0 0 40px;
    max-width: 680px;
    line-height: 1.65;
}

/* ----- Color tiles ----- */
.color-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.color-tile {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.color-tile .swatch {
    height: 132px;
    position: relative;
    border-bottom: 1px solid var(--color-divider);
}
.color-tile .swatch::after {
    content: attr(data-onswatch);
    position: absolute;
    bottom: 12px;
    left: 14px;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
    opacity: 0.78;
}
.color-tile .info {
    padding: 16px 18px 18px;
}
.color-tile .name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 16px;
    color: var(--color-navy);
    margin: 0 0 4px;
    font-variation-settings: "opsz" 32;
}
.color-tile .hex {
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 12px;
    color: var(--color-mute);
    margin: 0 0 8px;
    letter-spacing: 0.02em;
}
.color-tile .use {
    font-family: var(--font-body);
    font-size: 12px;
    color: var(--color-body);
    line-height: 1.45;
    margin: 0;
}

/* ----- Type specimens ----- */
.type-specimen {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 40px;
    margin-bottom: 14px;
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 28px;
    align-items: baseline;
}
.type-specimen .label {
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-mute);
}
.type-specimen .label .meta {
    display: block;
    margin-top: 4px;
    font-family: ui-monospace, monospace;
    font-size: 11px;
    color: var(--color-gold-deep);
    letter-spacing: 0.02em;
    text-transform: none;
    font-weight: 600;
}
.type-specimen .sample {
    color: var(--color-dark);
    line-height: 1.1;
}
.type-display { font-family: var(--font-heading); font-weight: 800; font-style: italic; font-size: 64px; font-variation-settings: "opsz" 144; letter-spacing: -0.02em; }
.type-h1      { font-family: var(--font-heading); font-weight: 800; font-style: italic; font-size: 48px; font-variation-settings: "opsz" 96;  letter-spacing: -0.015em; }
.type-h2      { font-family: var(--font-heading); font-weight: 800; font-size: 32px; font-variation-settings: "opsz" 72; letter-spacing: -0.01em; color: var(--color-navy); }
.type-h3      { font-family: var(--font-heading); font-weight: 700; font-size: 22px; font-variation-settings: "opsz" 32; color: var(--color-navy); }
.type-body    { font-family: var(--font-body); font-weight: 400; font-size: 16px; line-height: 1.7; color: var(--color-body); }
.type-label   { font-family: var(--font-body); font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--color-gold-deep); }

/* ----- Component demo strip ----- */
.demo-strip {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 40px;
    margin-bottom: 14px;
}
.demo-strip .demo-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px dashed var(--color-divider);
}
.demo-strip .demo-row:last-child { border-bottom: 0; padding-bottom: 0; }
.demo-strip .demo-row:first-child { padding-top: 0; }
.demo-strip .demo-label {
    flex: 0 0 200px;
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-mute);
}

/* Demo buttons reusing existing classes (they pick up theme via .avia-theme-three) */

/* Demo badges */
.demo-badge { display: inline-flex; align-items: center; padding: 6px 12px; font-family: var(--font-body); font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.demo-badge.b-gold { background: var(--color-yellow-soft); color: var(--color-gold-deep); border-radius: var(--radius-sm); }
.demo-badge.b-navy { background: var(--color-navy); color: var(--color-yellow); border-radius: var(--radius-sm); }
.demo-badge.b-terra { background: var(--color-orange); color: var(--color-white); border-radius: var(--radius-sm); }

/* ----- Spacing scale visual ----- */
.scale-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.scale-tile {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
}
.scale-tile .bar {
    background: var(--color-yellow);
    height: 16px;
    margin: 0 auto 14px;
}
.scale-tile .name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 14px;
    color: var(--color-navy);
    margin: 0 0 4px;
}
.scale-tile .val {
    font-family: ui-monospace, monospace;
    font-size: 12px;
    color: var(--color-mute);
}

/* Radii preview */
.radii-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.radii-tile {
    background: var(--color-navy);
    height: 90px;
    display: grid;
    place-items: center;
    color: var(--color-yellow);
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 16px;
}

/* ----- Do / Don't ----- */
.do-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.do-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
}
.do-card.do  { border-left: 4px solid var(--color-success); }
.do-card.dont{ border-left: 4px solid var(--color-error); }
.do-card .tag {
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 12px;
    display: inline-block;
}
.do-card.do .tag  { color: var(--color-success); }
.do-card.dont .tag{ color: var(--color-error); }
.do-card .quote {
    font-family: var(--font-heading);
    font-weight: 700;
    font-style: italic;
    font-size: 20px;
    color: var(--color-dark);
    margin: 0 0 10px;
    line-height: 1.4;
}
.do-card .why {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-body);
    margin: 0;
    line-height: 1.55;
}

/* ----- Section sequence preview ----- */
.seq-row { display: flex; height: 80px; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--color-border); }
.seq-cell { flex: 1; display: grid; place-items: center; font-family: var(--font-body); font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.seq-cell.s-jade   { background: var(--color-navy-deep); color: var(--color-yellow); }
.seq-cell.s-cream  { background: var(--color-yellow-soft); color: var(--color-gold-deep); }
.seq-cell.s-white  { background: var(--color-white); color: var(--color-navy); border-left: 1px solid var(--color-border); border-right: 1px solid var(--color-border); }
.seq-cell.s-linen  { background: var(--color-cream-deep); color: var(--color-navy); }

/* ----- Code-like callout ----- */
.callout {
    background: var(--color-navy-deep);
    color: var(--color-cream);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 13px;
    line-height: 1.65;
    overflow-x: auto;
    white-space: pre-line;   /* preserve newlines inserted via {'\n'} in JSX */
}
.callout .com { color: var(--color-yellow); opacity: 0.7; }
.callout .key { color: var(--color-yellow); }
.callout .val { color: #F5EFE3; }

/* ----- Footer of doc ----- */
.bg-foot {
    background: var(--color-navy-deep);
    color: rgba(245, 239, 227, 0.78);
    padding: 56px 40px;
    text-align: center;
}
.bg-foot .crest {
    width: 64px; height: 64px;
    background: var(--color-yellow);
    color: var(--color-navy);
    display: inline-grid;
    place-items: center;
    border-radius: var(--radius-sm);
    font-family: var(--font-heading);
    font-weight: 900;
    font-style: italic;
    font-size: 32px;
    margin-bottom: 18px;
    position: relative;
}
.bg-foot .crest::after {
    content: "";
    position: absolute;
    top: 0; right: 0;
    width: 0; height: 0;
    border-style: solid;
    border-width: 0 12px 12px 0;
    border-color: transparent var(--color-cream) transparent transparent;
}
.bg-foot p { margin: 8px 0; font-family: var(--font-body); font-size: 14px; }
.bg-foot .version { color: var(--color-yellow); font-family: ui-monospace, monospace; letter-spacing: 0.04em; }

/* ----- Responsive ----- */
@media (max-width: 900px) {
    .bg-hero { padding: 48px 20px 40px; }
    .bg-hero h1 { font-size: 40px; }
    .bg-section { padding: 56px 20px; }
    .bg-section h2 { font-size: 28px; }
    .color-grid { grid-template-columns: repeat(2, 1fr); }
    .type-specimen { grid-template-columns: 1fr; gap: 14px; padding: 24px; }
    .type-display { font-size: 44px; }
    .type-h1 { font-size: 34px; }
    .type-h2 { font-size: 26px; }
    .demo-strip { padding: 24px; }
    .demo-strip .demo-label { flex-basis: 100%; }
    .scale-grid, .radii-grid { grid-template-columns: repeat(2, 1fr); }
    .do-grid { grid-template-columns: 1fr; }
}