:root {
    --bg: #0a0a0a;
    --bg-2: #111111;
    --bg-3: #1a1a1a;
    --border: rgba(255,255,255,0.08);
    --border-hover: rgba(255,255,255,0.18);
    --text: #e8e8e8;
    --text-dim: rgba(255,255,255,0.45);
    --text-mid: rgba(255,255,255,0.7);
    --accent: #ffffff;
    --accent-red: #ff4444;
    --mono: 'Geist Mono', monospace;
    --sans: 'Geist', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.7;
    min-height: 100vh;
}

/* ── NAV ── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(10,10,10,0.88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    height: 56px;
}

.nav-logo {
    font-family: var(--mono);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text);
    text-decoration: none;
}

.nav-logo span { color: var(--text-dim); }

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text-dim);
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--text); }

/* ── LAYOUT ── */
.page-wrapper {
    display: grid;
    grid-template-columns: 240px 1fr;
    max-width: 1100px;
    padding-top: 56px;
    min-height: 100vh;
    margin-left:10rem;
}

/* ── SIDEBAR ── */
aside {
    position: sticky;
    top: 56px;
    height: calc(100vh - 56px);
    overflow-y: auto;
    padding: 48px 24px 48px 0;
    border-right: 1px solid var(--border);
}

aside::-webkit-scrollbar { width: 4px; }
aside::-webkit-scrollbar-track { background: transparent; }
aside::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.sidebar-section {
    margin-bottom: 32px;
}

.sidebar-label {
    font-family: var(--mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 10px;
    padding-left: 12px;
}

.sidebar-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-nav a {
    display: block;
    font-size: 13px;
    color: var(--text-mid);
    text-decoration: none;
    padding: 5px 12px;
    border-radius: 5px;
    border-left: 2px solid transparent;
    transition: all 0.15s;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    color: var(--text);
    background: var(--bg-3);
    border-left-color: var(--accent);
}

/* ── MAIN CONTENT ── */
main {
    padding: 48px 0 48px 56px;
    min-width: 0;
}

/* ── HERO ── */
.doc-hero {
    margin-bottom: 64px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border);
}

.doc-hero .eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 16px;
}

.doc-hero h1 {
    font-size: 42px;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 16px;
}

.doc-hero h1 em {
    font-style: normal;
    color: var(--text-dim);
}

.doc-hero .lead {
    font-size: 16px;
    color: var(--text-mid);
    max-width: 580px;
    line-height: 1.65;
}

/* ── SECTIONS ── */
.doc-section {
    margin-bottom: 64px;
    scroll-margin-top: 80px;
}

.section-tag {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.doc-section h2 {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    color: var(--text);
}

.doc-section p {
    color: var(--text-mid);
    margin-bottom: 16px;
    max-width: 620px;
}

/* ── CARDS GRID ── */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 24px;
}

.card {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px 22px;
    transition: border-color 0.2s, background 0.2s;
}

.card:hover {
    border-color: var(--border-hover);
    background: var(--bg-3);
}

.card-icon {
    width: 32px;
    height: 32px;
    margin-bottom: 12px;
    opacity: 0.8;
}

.card h3 {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 6px;
}

.card p {
    font-size: 13px;
    color: var(--text-dim);
    margin: 0;
    line-height: 1.55;
}

/* ── STEP LIST ── */
.step-list {
    list-style: none;
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.step-list li {
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.step-list li:last-child { border-bottom: none; }

.step-num {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text-dim);
    padding-top: 2px;
    letter-spacing: 0.05em;
}

.step-body h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text);
}

.step-body p {
    font-size: 13px;
    color: var(--text-dim);
    margin: 0;
    max-width: 500px;
}

/* ── TABLE ── */
.doc-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    font-size: 13px;
}

.doc-table th {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-dim);
    text-align: left;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
}

.doc-table td {
    padding: 12px 14px;
    color: var(--text-mid);
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

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

.doc-table tr:hover td { background: var(--bg-3); }

.doc-table td:first-child {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text);
    white-space: nowrap;
}

/* ── CALLOUT ── */
.callout {
    border: 1px solid var(--border);
    border-left: 3px solid rgba(255,255,255,0.3);
    background: var(--bg-2);
    border-radius: 8px;
    padding: 16px 20px;
    margin: 20px 0;
    font-size: 13px;
    color: var(--text-mid);
    max-width: 620px;
}

.callout strong {
    color: var(--text);
    display: block;
    margin-bottom: 4px;
    font-size: 13px;
}

.callout.warn {
    border-left-color: var(--accent-red);
}

/* ── BADGE ── */
.badge {
    display: inline-block;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--bg-3);
    border: 1px solid var(--border);
    color: var(--text-dim);
    vertical-align: middle;
    margin-left: 6px;
}

/* ── API ENDPOINT BLOCK ── */
.endpoint {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-3);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    margin: 8px 0;
    font-family: var(--mono);
    font-size: 13px;
}

.method {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 2px 7px;
    border-radius: 4px;
    background: rgba(255,255,255,0.1);
    color: var(--text);
    flex-shrink: 0;
}

.method.post { background: rgba(100,200,100,0.15); color: #7dda7d; }
.method.get  { background: rgba(100,150,255,0.15); color: #82b0ff; }
.method.del  { background: rgba(255,80,80,0.15);   color: #ff8080; }

.endpoint-path { color: var(--text-mid); font-size: 13px; }

/* ── DIVIDER ── */
.doc-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 48px 0;
}

/* ── FOOTER ── */
footer {
    border-top: 1px solid var(--border);
    padding: 32px 40px;
    text-align: center;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.04em;
}

footer a { color: var(--text-dim); text-decoration: none; }
footer a:hover { color: var(--text); }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

.doc-hero { animation: fadeUp 0.5s ease both; }
.doc-section { animation: fadeUp 0.5s ease both; }
.doc-section:nth-child(2) { animation-delay: 0.05s; }
.doc-section:nth-child(3) { animation-delay: 0.1s; }
.doc-section:nth-child(4) { animation-delay: 0.15s; }
.doc-section:nth-child(5) { animation-delay: 0.2s; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    .page-wrapper {
        grid-template-columns: 1fr;
        margin-left: 0;
    }
    aside { display: none; }
    main { 
        padding: 32px 24px;
    }
    nav { padding: 0 20px; }
    .cards-grid { grid-template-columns: 1fr; }
    .doc-hero h1 { font-size: 28px; }
    nav .nav-links { display: none; }
}