/* =========================================================================
   DOCUMENTATION — clean, light docs-site theme
   3-column shell: TOC · content · on-this-page rail
   ========================================================================= */

:root {
    --doc-bg:          #ffffff;
    --doc-bg-soft:     #f6f8fc;
    --doc-bg-mute:     #f1f5f9;
    --doc-line:        rgba(15, 23, 42, 0.08);
    --doc-line-2:      rgba(15, 23, 42, 0.04);
    --doc-line-strong: rgba(15, 23, 42, 0.14);

    --doc-ink:         #0f172a;
    --doc-ink-2:       #334155;
    --doc-ink-3:       #64748b;
    --doc-ink-4:       #94a3b8;

    --doc-accent:      #4f46e5;
    --doc-accent-2:    #6366f1;
    --doc-accent-soft: rgba(99, 102, 241, 0.10);
    --doc-cyan:        #0891b2;
    --doc-cyan-2:      #06b6d4;
    --doc-cyan-soft:   rgba(6, 182, 212, 0.10);
    --doc-emerald:     #059669;
    --doc-emerald-soft:rgba(16, 185, 129, 0.10);
    --doc-amber:       #d97706;
    --doc-amber-soft:  rgba(245, 158, 11, 0.10);
    --doc-rose:        #e11d48;
    --doc-rose-soft:   rgba(244, 63, 94, 0.10);
    --doc-violet:      #7c3aed;
    --doc-violet-soft: rgba(168, 85, 247, 0.10);
    --doc-slate:       #64748b;
    --doc-slate-soft:  rgba(100, 116, 139, 0.10);

    --doc-mono:        'JetBrains Mono', 'Fira Code', Consolas, monospace;
    --doc-shadow-sm:   0 1px 2px rgba(15, 23, 42, .04), inset 0 0 0 1px var(--doc-line);
    --doc-shadow-card: 0 4px 14px -8px rgba(15, 23, 42, .12), inset 0 0 0 1px var(--doc-line);
    --doc-shadow-pop:  0 18px 38px -14px rgba(15, 23, 42, .18), inset 0 0 0 1px var(--doc-line-strong);
}

/* ===== Page shell ===== */
.doc-page {
    margin-left: 16rem;          /* sidebar offset */
    min-height: 100vh;
    background: var(--doc-bg);
    color: var(--doc-ink);
    overflow-x: hidden;
    line-height: 1.6;
}
.doc-page * { box-sizing: border-box; }

/* =========================================================================
   HERO
   ========================================================================= */
.doc-hero {
    position: relative;
    padding: 56px 40px 40px;
    background:
        radial-gradient(900px 320px at 100% 0%, rgba(99, 102, 241, 0.14), transparent 60%),
        radial-gradient(700px 240px at 0% 100%, rgba(6, 182, 212, 0.12), transparent 60%),
        linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border-bottom: 1px solid var(--doc-line);
    overflow: hidden;
}
.doc-hero-bg { position: absolute; inset: 0; pointer-events: none; }
.doc-hero-mesh {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(15, 23, 42, .04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 23, 42, .04) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: radial-gradient(circle at 30% 30%, #000 30%, transparent 80%);
    animation: docMesh 30s linear infinite;
}
@keyframes docMesh { from { background-position: 0 0; } to { background-position: 32px 32px; } }
.doc-hero-orb {
    position: absolute;
    width: 260px; height: 260px; border-radius: 50%;
    filter: blur(80px);
    opacity: .30;
}
.doc-hero-orb-1 { top: -60px; right: -40px; background: var(--doc-accent-2); animation: docOrb 9s ease-in-out infinite; }
.doc-hero-orb-2 { bottom: -100px; left: 30%; background: var(--doc-cyan-2); animation: docOrb 11s ease-in-out infinite reverse; }
@keyframes docOrb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50%      { transform: translate(16px, -10px) scale(1.06); }
}

.doc-hero-frame {
    position: relative;
    max-width: 980px;
    margin: 0 auto;
}
.doc-hero-eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--doc-mono);
    font-size: 10px; font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--doc-accent);
    text-transform: uppercase;
    background: var(--doc-accent-soft);
    border: 1px solid rgba(99, 102, 241, .25);
    border-radius: 999px;
    padding: 4px 12px;
    margin-bottom: 16px;
}
.doc-hero-eyebrow-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--doc-accent);
    box-shadow: 0 0 0 0 var(--doc-accent);
    animation: docPulse 1.8s ease-out infinite;
}
@keyframes docPulse {
    0%   { box-shadow: 0 0 0 0 rgba(99, 102, 241, .55); }
    70%  { box-shadow: 0 0 0 8px rgba(99, 102, 241, 0); }
    100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
}

.doc-hero-title {
    font-size: 48px;
    line-height: 1.05;
    letter-spacing: -0.03em;
    font-weight: 800;
    margin: 0 0 14px 0;
    color: var(--doc-ink);
    background: linear-gradient(135deg, #0f172a 0%, #334155 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.doc-hero-sub {
    font-size: 16px;
    color: var(--doc-ink-2);
    max-width: 64ch;
    margin: 0 0 24px 0;
    line-height: 1.55;
}

.doc-hero-search {
    position: relative;
    display: flex; align-items: center;
    background: var(--doc-bg);
    border: 1px solid var(--doc-line);
    border-radius: 14px;
    padding: 0 18px;
    box-shadow: var(--doc-shadow-card);
    transition: border-color .2s ease, box-shadow .2s ease;
    max-width: 720px;
}
.doc-hero-search:focus-within {
    border-color: var(--doc-accent-2);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, .12), 0 4px 14px -8px rgba(15, 23, 42, .15);
}
.doc-hero-search > i {
    color: var(--doc-ink-3);
    font-size: 15px;
    margin-right: 12px;
}
.doc-hero-search input {
    flex: 1;
    background: transparent;
    border: 0; outline: 0;
    height: 52px;
    color: var(--doc-ink);
    font-size: 15px;
    font-family: inherit;
}
.doc-hero-search input::placeholder { color: var(--doc-ink-4); }
.doc-hero-search kbd {
    font-family: var(--doc-mono);
    font-size: 11px;
    color: var(--doc-ink-3);
    background: var(--doc-bg-mute);
    border: 1px solid var(--doc-line);
    border-radius: 5px;
    padding: 3px 8px;
    box-shadow: inset 0 -1px 0 var(--doc-line);
}

.doc-hero-search-results {
    background: var(--doc-bg);
    border: 1px solid var(--doc-line);
    border-radius: 12px;
    box-shadow: var(--doc-shadow-pop);
    margin-top: 8px;
    max-width: 720px;
    max-height: 420px;
    overflow-y: auto;
    padding: 8px;
    animation: docFadeIn .2s ease;
}
@keyframes docFadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }
.doc-search-result {
    display: flex; align-items: flex-start; gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--doc-ink);
    text-decoration: none;
    cursor: pointer;
    transition: background .12s ease;
}
.doc-search-result:hover, .doc-search-result.focused { background: var(--doc-bg-mute); }
.doc-search-result-ico {
    width: 28px; height: 28px;
    border-radius: 6px;
    background: var(--doc-accent-soft);
    color: var(--doc-accent);
    display: grid; place-items: center;
    font-size: 12px;
    flex-shrink: 0;
}
.doc-search-result-body { flex: 1; min-width: 0; }
.doc-search-result-title { font-weight: 600; font-size: 13px; }
.doc-search-result-snip {
    font-size: 12px; color: var(--doc-ink-3);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
}
.doc-search-result mark {
    background: rgba(99, 102, 241, .18);
    color: var(--doc-ink);
    padding: 0 1px;
    border-radius: 2px;
}
.doc-search-empty { padding: 20px; text-align: center; color: var(--doc-ink-3); font-size: 13px; }

.doc-hero-stats {
    display: flex;
    gap: 18px;
    margin-top: 28px;
    flex-wrap: wrap;
}
.doc-hero-stat {
    display: flex; flex-direction: column;
    background: var(--doc-bg);
    border: 1px solid var(--doc-line);
    border-radius: 10px;
    padding: 10px 16px;
    min-width: 90px;
    box-shadow: var(--doc-shadow-sm);
}
.doc-hero-stat strong {
    font-family: var(--doc-mono);
    font-size: 20px;
    font-weight: 700;
    color: var(--doc-accent);
    letter-spacing: -0.02em;
}
.doc-hero-stat span {
    font-size: 11px;
    color: var(--doc-ink-3);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* =========================================================================
   DOC SHELL (3 columns)
   ========================================================================= */
.doc-shell {
    display: grid;
    grid-template-columns: 264px minmax(0, 1fr) 240px;
    gap: 0;
    max-width: 1500px;
    margin: 0 auto;
}
@media (max-width: 1280px) {
    .doc-shell { grid-template-columns: 240px minmax(0, 1fr); }
    .doc-rail { display: none; }
}
@media (max-width: 980px) {
    .doc-shell { grid-template-columns: 1fr; }
    .doc-toc { display: none; }
}

/* =========================================================================
   LEFT TOC
   ========================================================================= */
.doc-toc {
    position: sticky;
    top: 0;
    align-self: start;
    height: 100vh;
    border-right: 1px solid var(--doc-line);
    background: var(--doc-bg-soft);
    overflow-y: auto;
    overscroll-behavior: contain;
}
.doc-toc::-webkit-scrollbar { width: 6px; }
.doc-toc::-webkit-scrollbar-thumb { background: var(--doc-line); border-radius: 3px; }

.doc-toc-inner {
    padding: 24px 12px 80px;
}
.doc-toc-group {
    margin-bottom: 18px;
}
.doc-toc-group-label {
    font-family: var(--doc-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--doc-ink-3);
    text-transform: uppercase;
    padding: 6px 12px;
    margin-bottom: 4px;
}

.doc-toc-link {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 12px;
    border-radius: 7px;
    color: var(--doc-ink-2);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all .15s ease;
    position: relative;
    border-left: 2px solid transparent;
}
.doc-toc-link:hover {
    background: rgba(99, 102, 241, .05);
    color: var(--doc-ink);
}
.doc-toc-link i {
    font-size: 12px;
    color: var(--doc-ink-3);
    width: 14px;
    text-align: center;
    transition: color .15s ease;
}
.doc-toc-link:hover i { color: var(--doc-accent); }
.doc-toc-link.active {
    background: linear-gradient(90deg, rgba(99, 102, 241, .10), transparent 80%);
    color: var(--doc-accent);
    font-weight: 600;
    border-left-color: var(--doc-accent);
}
.doc-toc-link.active i { color: var(--doc-accent); }

/* =========================================================================
   CONTENT
   ========================================================================= */
.doc-content {
    padding: 40px 48px 100px;
    max-width: 820px;
    margin: 0 auto;
    width: 100%;
}
@media (max-width: 980px) {
    .doc-content { padding: 24px 20px 80px; }
}

.doc-section {
    padding-top: 24px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--doc-line);
    scroll-margin-top: 24px;
}
.doc-section:last-child { border-bottom: 0; }

.doc-h {
    margin-bottom: 24px;
}
.doc-h-eyebrow {
    display: inline-block;
    font-family: var(--doc-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--doc-accent);
    text-transform: uppercase;
    background: var(--doc-accent-soft);
    border-radius: 4px;
    padding: 3px 8px;
    margin-bottom: 12px;
}
.doc-content h1 {
    font-size: 34px;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--doc-ink);
    margin: 0 0 10px;
    line-height: 1.1;
}
.doc-content h2 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--doc-ink);
    margin: 32px 0 12px;
    scroll-margin-top: 24px;
    position: relative;
}
.doc-anchor {
    position: relative;
}
.doc-anchor::before {
    content: '#';
    position: absolute;
    left: -22px;
    color: var(--doc-ink-4);
    opacity: 0;
    font-weight: 400;
    transition: opacity .15s ease, color .15s ease;
}
.doc-anchor:hover::before { opacity: 1; color: var(--doc-accent); }
.doc-content h3 {
    font-size: 15px;
    font-weight: 700;
    color: var(--doc-ink);
    margin: 0 0 6px;
}
.doc-content p {
    color: var(--doc-ink-2);
    margin: 0 0 12px;
    font-size: 14px;
    line-height: 1.65;
}
.doc-lede {
    font-size: 16px !important;
    color: var(--doc-ink-2);
    line-height: 1.55 !important;
}
.doc-content a {
    color: var(--doc-accent);
    text-decoration: none;
    border-bottom: 1px dotted rgba(99, 102, 241, .4);
    transition: color .15s ease, border-color .15s ease;
}
.doc-content a:hover {
    color: var(--doc-accent-2);
    border-bottom-color: var(--doc-accent-2);
}
.doc-content code {
    font-family: var(--doc-mono);
    font-size: 0.9em;
    background: var(--doc-bg-mute);
    color: var(--doc-accent);
    padding: 1px 6px;
    border-radius: 4px;
    border: 1px solid var(--doc-line);
}
.doc-content strong { color: var(--doc-ink); font-weight: 600; }
.doc-content em { color: var(--doc-ink); font-style: italic; }
.doc-content kbd {
    font-family: var(--doc-mono);
    font-size: 11px;
    color: var(--doc-ink-2);
    background: var(--doc-bg);
    border: 1px solid var(--doc-line);
    border-radius: 5px;
    padding: 2px 7px;
    box-shadow: inset 0 -1px 0 var(--doc-line);
}

/* ----- Bullets ----- */
.doc-bullets {
    list-style: none;
    padding-left: 0;
    margin: 0 0 16px;
}
.doc-bullets li {
    position: relative;
    padding: 6px 0 6px 22px;
    color: var(--doc-ink-2);
    font-size: 14px;
    line-height: 1.6;
}
.doc-bullets li::before {
    content: '';
    position: absolute;
    left: 4px; top: 14px;
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--doc-accent);
    box-shadow: 0 0 0 3px var(--doc-accent-soft);
}

/* ----- Steps (numbered) ----- */
.doc-steps {
    list-style: none;
    padding-left: 0;
    margin: 0;
    counter-reset: step;
}
.doc-steps > li {
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 18px;
    padding: 14px 0;
    border-bottom: 1px solid var(--doc-line-2);
}
.doc-steps > li:last-child { border-bottom: 0; }
.doc-step-num {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--doc-accent), var(--doc-accent-2));
    color: #fff;
    font-family: var(--doc-mono);
    font-weight: 700;
    font-size: 13px;
    display: grid; place-items: center;
    box-shadow: 0 4px 12px -4px rgba(99, 102, 241, .45);
}
.doc-steps h3 { margin-top: 4px; }
.doc-steps p { margin-bottom: 0; }

/* ----- Flow ordered list ----- */
.doc-flow {
    list-style: none;
    padding-left: 0;
    counter-reset: flow;
    margin: 0 0 18px;
}
.doc-flow li {
    counter-increment: flow;
    position: relative;
    padding: 12px 16px 12px 56px;
    margin-bottom: 8px;
    background: var(--doc-bg-soft);
    border: 1px solid var(--doc-line);
    border-radius: 10px;
    color: var(--doc-ink-2);
    font-size: 14px;
    line-height: 1.55;
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.doc-flow li:hover {
    transform: translateX(2px);
    border-color: rgba(99, 102, 241, .3);
    box-shadow: 0 4px 12px -8px rgba(99, 102, 241, .3);
}
.doc-flow li::before {
    content: counter(flow);
    position: absolute;
    left: 14px; top: 12px;
    width: 28px; height: 28px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--doc-accent), var(--doc-accent-2));
    color: #fff;
    font-family: var(--doc-mono);
    font-weight: 700;
    font-size: 12px;
    display: grid; place-items: center;
    box-shadow: 0 4px 10px -4px rgba(99, 102, 241, .4);
}

/* ----- Definition list ----- */
.doc-deflist {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
}
.doc-deflist > div {
    background: var(--doc-bg-soft);
    border: 1px solid var(--doc-line);
    border-radius: 10px;
    padding: 12px 14px;
    transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.doc-deflist > div:hover {
    border-color: rgba(99, 102, 241, .35);
    box-shadow: 0 4px 14px -8px rgba(99, 102, 241, .25);
    transform: translateY(-1px);
}
.doc-deflist dt {
    font-family: var(--doc-mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--doc-accent);
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}
.doc-deflist dd {
    margin: 0;
    font-size: 13px;
    line-height: 1.5;
    color: var(--doc-ink-2);
}

/* ----- Callouts ----- */
.doc-callout {
    display: grid;
    grid-template-columns: 28px 1fr;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 10px;
    margin: 18px 0;
    font-size: 13.5px;
    line-height: 1.55;
    border: 1px solid;
}
.doc-callout strong { color: inherit; }
.doc-callout-ico {
    width: 28px; height: 28px;
    border-radius: 50%;
    display: grid; place-items: center;
    font-size: 13px;
    color: #fff;
}
.doc-callout-info {
    background: var(--doc-accent-soft);
    border-color: rgba(99, 102, 241, .25);
    color: var(--doc-ink-2);
}
.doc-callout-info .doc-callout-ico { background: var(--doc-accent); }
.doc-callout-tip {
    background: var(--doc-emerald-soft);
    border-color: rgba(16, 185, 129, .3);
    color: var(--doc-ink-2);
}
.doc-callout-tip .doc-callout-ico { background: var(--doc-emerald); }
.doc-callout-warn {
    background: var(--doc-amber-soft);
    border-color: rgba(217, 119, 6, .3);
    color: var(--doc-ink-2);
}
.doc-callout-warn .doc-callout-ico { background: var(--doc-amber); }
.doc-callout-danger {
    background: var(--doc-rose-soft);
    border-color: rgba(225, 29, 72, .3);
    color: var(--doc-ink-2);
}
.doc-callout-danger .doc-callout-ico { background: var(--doc-rose); }

/* ----- Code block ----- */
.doc-code {
    position: relative;
    background: #0f172a;
    border: 1px solid rgba(15, 23, 42, .8);
    border-radius: 12px;
    padding: 14px 16px 14px 16px;
    overflow-x: auto;
    margin: 0 0 18px;
    color: #e2e8f0;
    font-family: var(--doc-mono);
    font-size: 13px;
    line-height: 1.65;
    box-shadow: var(--doc-shadow-card);
}
.doc-code code { background: transparent; color: inherit; border: 0; padding: 0; font-size: inherit; }
.doc-code .tk-kw   { color: #c084fc; font-weight: 600; }
.doc-code .tk-cm   { color: #94a3b8; font-style: italic; }
.doc-code .tk-id   { color: #fbbf24; }
.doc-code .tk-fn   { color: #34d399; }
.doc-code .tk-str  { color: #fda4af; }
.doc-code .tk-lit  { color: #67e8f9; }
.doc-code-copy {
    position: absolute;
    top: 8px; right: 8px;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .12);
    color: #cbd5e1;
    border-radius: 6px;
    width: 30px; height: 28px;
    display: grid; place-items: center;
    cursor: pointer;
    font-size: 11px;
    opacity: 0;
    transition: all .15s ease;
}
.doc-code:hover .doc-code-copy { opacity: 1; }
.doc-code-copy:hover { background: rgba(255, 255, 255, .14); color: #fff; }
.doc-code-copy.copied { background: rgba(16, 185, 129, .25); border-color: rgba(16, 185, 129, .4); color: #6ee7b7; opacity: 1; }

/* ----- Tables ----- */
.doc-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 0 0 18px;
    font-size: 13.5px;
    border: 1px solid var(--doc-line);
    border-radius: 10px;
    overflow: hidden;
    background: var(--doc-bg);
}
.doc-table thead th {
    background: var(--doc-bg-soft);
    color: var(--doc-ink-2);
    font-family: var(--doc-mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--doc-line);
}
.doc-table tbody td {
    padding: 10px 14px;
    color: var(--doc-ink-2);
    border-bottom: 1px solid var(--doc-line-2);
    line-height: 1.5;
}
.doc-table tbody tr:last-child td { border-bottom: 0; }
.doc-table tbody tr { transition: background .12s ease; }
.doc-table tbody tr:hover { background: var(--doc-bg-soft); }

/* ----- Grid of cards ----- */
.doc-grid { display: grid; gap: 14px; margin: 0 0 18px; }
.doc-grid-2 { grid-template-columns: repeat(2, 1fr); }
.doc-grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 720px) {
    .doc-grid-2, .doc-grid-3 { grid-template-columns: 1fr; }
}

.doc-card {
    background: var(--doc-bg);
    border: 1px solid var(--doc-line);
    border-radius: 12px;
    padding: 16px;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    box-shadow: var(--doc-shadow-sm);
}
.doc-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--doc-shadow-card);
    border-color: var(--doc-line-strong);
}
.doc-card-ico {
    width: 38px; height: 38px;
    border-radius: 9px;
    display: grid; place-items: center;
    color: #fff;
    font-size: 15px;
    margin-bottom: 10px;
    box-shadow: 0 4px 10px -4px rgba(15, 23, 42, .2);
}
.doc-card h3 { margin: 0 0 4px; font-size: 14px; }
.doc-card p {
    margin: 0;
    font-size: 12.5px;
    line-height: 1.5;
    color: var(--doc-ink-3);
}

.tone-indigo  { background: linear-gradient(135deg, #4f46e5, #6366f1); }
.tone-cyan    { background: linear-gradient(135deg, #0891b2, #06b6d4); }
.tone-emerald { background: linear-gradient(135deg, #047857, #10b981); }
.tone-amber   { background: linear-gradient(135deg, #d97706, #f59e0b); }
.tone-rose    { background: linear-gradient(135deg, #be123c, #f43f5e); }
.tone-violet  { background: linear-gradient(135deg, #7c3aed, #a855f7); }
.tone-magenta { background: linear-gradient(135deg, #be185d, #ec4899); }
.tone-slate   { background: linear-gradient(135deg, #475569, #64748b); }

/* ----- Mini cards (2-up) ----- */
.doc-mini {
    background: var(--doc-bg-soft);
    border: 1px solid var(--doc-line);
    border-radius: 10px;
    padding: 12px 14px;
    transition: border-color .18s ease;
}
.doc-mini:hover { border-color: rgba(99, 102, 241, .3); }
.doc-mini strong {
    display: block;
    font-family: var(--doc-mono);
    font-size: 12px;
    color: var(--doc-accent);
    margin-bottom: 4px;
    letter-spacing: 0.04em;
}
.doc-mini span {
    font-size: 13px;
    color: var(--doc-ink-2);
    line-height: 1.55;
}

/* ----- Arch layer ----- */
.doc-arch {
    display: flex; flex-direction: column;
    gap: 10px;
    margin: 0 0 18px;
}
.doc-arch-layer {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 14px;
    align-items: center;
    background: var(--doc-bg-soft);
    border: 1px solid var(--doc-line);
    border-radius: 10px;
    padding: 12px 14px;
}
.doc-arch-pill {
    display: inline-flex; align-items: center; justify-content: center;
    color: #fff;
    font-family: var(--doc-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border-radius: 8px;
    padding: 8px 12px;
    box-shadow: 0 4px 10px -4px rgba(15, 23, 42, .2);
}
.doc-arch-body {
    color: var(--doc-ink-2);
    font-size: 13.5px;
    line-height: 1.5;
}

/* ----- Changelog ----- */
.doc-changelog {
    list-style: none;
    padding-left: 0;
    margin: 0;
    display: flex; flex-direction: column;
    gap: 8px;
}
.doc-changelog li {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 14px;
    align-items: start;
    padding: 12px 14px;
    background: var(--doc-bg-soft);
    border: 1px solid var(--doc-line);
    border-radius: 10px;
    transition: border-color .18s ease, transform .18s ease;
}
.doc-changelog li:hover { border-color: rgba(99, 102, 241, .3); transform: translateX(2px); }
.doc-change-tag {
    display: inline-flex; align-items: center; justify-content: center;
    font-family: var(--doc-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #fff;
    padding: 4px 8px;
    border-radius: 5px;
    height: 22px;
    box-shadow: 0 2px 6px -2px rgba(15, 23, 42, .25);
}
.doc-changelog li > div {
    font-size: 13.5px;
    color: var(--doc-ink-2);
    line-height: 1.55;
}

/* =========================================================================
   RIGHT RAIL (on this page)
   ========================================================================= */
.doc-rail {
    position: sticky;
    top: 0;
    align-self: start;
    height: 100vh;
    padding: 40px 24px 60px;
    overflow-y: auto;
    overscroll-behavior: contain;
}
.doc-rail::-webkit-scrollbar { width: 4px; }
.doc-rail::-webkit-scrollbar-thumb { background: var(--doc-line); border-radius: 2px; }
.doc-rail-label {
    font-family: var(--doc-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--doc-ink-3);
    text-transform: uppercase;
    margin-bottom: 12px;
}
.doc-rail-nav {
    display: flex; flex-direction: column;
    gap: 2px;
    border-left: 1px solid var(--doc-line);
}
.doc-rail-link {
    display: block;
    padding: 6px 12px;
    color: var(--doc-ink-3);
    font-size: 12.5px;
    line-height: 1.5;
    text-decoration: none;
    border-left: 2px solid transparent;
    margin-left: -1px;
    transition: color .15s ease, border-color .15s ease;
    border-bottom: 0;
}
.doc-rail-link:hover { color: var(--doc-ink); }
.doc-rail-link.active {
    color: var(--doc-accent);
    border-left-color: var(--doc-accent);
    font-weight: 600;
}
.doc-rail-help {
    margin-top: 24px;
    background: var(--doc-bg-soft);
    border: 1px solid var(--doc-line);
    border-radius: 10px;
    padding: 14px;
}
.doc-rail-help h4 {
    margin: 0 0 4px;
    font-size: 13px;
    color: var(--doc-ink);
    font-weight: 700;
}
.doc-rail-help p {
    margin: 0;
    font-size: 12px;
    color: var(--doc-ink-3);
    line-height: 1.5;
}
.doc-rail-help a {
    color: var(--doc-accent);
    text-decoration: none;
}
.doc-rail-help a:hover { text-decoration: underline; }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 900px) {
    .doc-page { margin-left: 0; }
    .doc-hero { padding: 32px 20px 24px; }
    .doc-hero-title { font-size: 32px; }
}