:root {
    --bg: #0b1120;
    --bg-elev: #1e293b;
    --bg-card: #1e293b;
    --border: #334155;
    --text: #e2e8f0;
    --text-dim: #94a3b8;
    --accent: #38bdf8;
    --accent-dim: #0ea5e9;
    --code-bg: #0f172a;
    --code-text: #e0f2fe;
    --green: #10b981;
    --orange: #f59e0b;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    line-height: 1.6;
    font-size: 15px;
}

body {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
    background: var(--bg-elev);
    border-right: 1px solid var(--border);
    padding: 24px 18px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
}

.brand-logo {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: linear-gradient(135deg, #38bdf8, #818cf8);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.5px;
}

.brand-name {
    font-weight: 700;
    font-size: 16px;
}

.brand-tag {
    color: var(--text-dim);
    font-size: 12px;
}

.sidebar nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar nav a {
    color: var(--text-dim);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.15s ease;
    border-left: 2px solid transparent;
}

.sidebar nav a:hover {
    background: rgba(56, 189, 248, 0.08);
    color: var(--text);
    border-left-color: var(--accent);
}

.sidebar nav a.is-active {
    border-left-color: var(--accent);
    background: rgba(56, 189, 248, 0.12);
    color: var(--accent);
    font-weight: 500;
}

.sidebar nav a code {
    background: none;
    color: inherit;
    font-size: 12px;
}

/* Sidebar virou accordion (1 grupo aberto por vez) */
.sidebar nav {
    gap: 2px;
}
.nav-group {
    display: flex;
    flex-direction: column;
}
.nav-group-header {
    appearance: none;
    background: transparent;
    border: none;
    text-align: left;
    width: 100%;
    cursor: pointer;
    padding: 10px 12px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.2px;
    color: var(--text);
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.15s ease;
}
.nav-group-header:hover {
    background: rgba(56, 189, 248, 0.06);
}
.nav-group-header::after {
    content: '›';
    font-size: 16px;
    color: var(--text-dim);
    transition: transform 0.2s ease;
    transform: rotate(0deg);
}
.nav-group.is-open .nav-group-header::after {
    transform: rotate(90deg);
}
.nav-group.is-open .nav-group-header {
    color: var(--accent);
}

.nav-group-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-left: 8px;
}
.nav-group.is-open .nav-group-content {
    max-height: 1200px;
    padding-bottom: 6px;
}
.nav-group-content a {
    padding-left: 18px;
    font-size: 13px;
}

.sidebar-footer {
    color: var(--text-dim);
    font-size: 11px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    margin-top: 16px;
}

/* Drawer mobile */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 30;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 18px;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
}
.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 19;
}
.sidebar-backdrop.is-open {
    display: block;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ===== Main ===== */
main {
    padding: 48px 56px 80px;
    max-width: 1100px;
}

section {
    margin-bottom: 64px;
    scroll-margin-top: 24px;
}

h1 {
    font-size: 36px;
    margin: 0 0 16px;
    background: linear-gradient(135deg, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

h2 {
    font-size: 24px;
    margin: 0 0 16px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
    color: var(--text);
}

h3 {
    font-size: 18px;
    margin: 24px 0 12px;
    color: var(--text);
}

p {
    color: var(--text-dim);
    max-width: 760px;
}

p.lead {
    font-size: 17px;
    color: var(--text);
    max-width: 720px;
}

a {
    color: var(--accent);
}

code {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', Menlo, Consolas, monospace;
    font-size: 13px;
}

pre {
    background: var(--code-bg);
    padding: 18px 20px;
    border-radius: 8px;
    overflow-x: auto;
    border: 1px solid var(--border);
    margin: 16px 0;
}

pre code {
    background: none;
    padding: 0;
    font-size: 13px;
    line-height: 1.55;
}

/* ===== Cards ===== */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 32px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
}

.card-icon {
    font-size: 28px;
    margin-bottom: 12px;
}

.card h3 {
    margin: 0 0 8px;
    font-size: 15px;
    color: var(--accent);
}

.card p {
    margin: 0;
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.5;
}

/* ===== Tables ===== */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

th {
    background: rgba(56, 189, 248, 0.08);
    color: var(--accent);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(56, 189, 248, 0.03);
}

/* ===== Mermaid ===== */
.mermaid {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 24px;
    margin: 16px 0;
    text-align: center;
    overflow-x: auto;
}

/* ===== Tabela em detalhe (cada tabela do platform.*) ===== */
.table-detail {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    margin: 20px 0;
    overflow: hidden;
}

.table-detail-header {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(129, 140, 248, 0.15));
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: baseline;
    gap: 12px;
    flex-wrap: wrap;
}

.table-detail-header h3 {
    margin: 0;
    font-family: 'SF Mono', Menlo, Consolas, monospace;
    color: var(--accent);
    font-size: 16px;
}

.table-detail-subtitle {
    color: var(--text-dim);
    font-size: 13px;
    font-style: italic;
}

.table-detail > p {
    padding: 14px 20px 0;
    margin: 0 0 10px;
}

.table-detail pre {
    margin: 6px 20px 14px;
}

.table-detail-warning {
    background: rgba(245, 158, 11, 0.08);
    border-top: 1px solid rgba(245, 158, 11, 0.3);
    padding: 12px 20px;
    color: var(--text-dim);
    font-size: 13px;
}

.table-detail-warning strong {
    color: #fbbf24;
}

/* ===== Mermaid erDiagram (forçar SVG largo p/ caber colunas) ===== */
.mermaid svg {
    max-width: 100%;
    height: auto;
}

/* ===== Callout ===== */
.callout {
    background: rgba(56, 189, 248, 0.08);
    border-left: 3px solid var(--accent);
    padding: 14px 18px;
    border-radius: 6px;
    margin: 20px 0;
    color: var(--text);
    font-size: 14px;
}

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

/* ===== Details (FAQ) ===== */
details {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 18px;
    margin: 10px 0;
}

details summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text);
    font-size: 14px;
}

details[open] summary {
    margin-bottom: 12px;
    color: var(--accent);
}

details p, details ul {
    margin: 8px 0;
    color: var(--text-dim);
    font-size: 14px;
}

details ul {
    padding-left: 20px;
}

/* ===== Footer ===== */
footer {
    margin-top: 80px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 12px;
    text-align: center;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    body { grid-template-columns: 1fr; }
    .sidebar {
        position: fixed;
        top: 0; left: 0;
        height: 100vh;
        width: 280px;
        z-index: 20;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
    }
    .sidebar.is-open { transform: translateX(0); }
    .sidebar-toggle { display: block; }
    main { padding: 64px 24px 60px; }
    h1 { font-size: 28px; }
    h2 { font-size: 20px; }
}