/* docs.css — shared styles for content pages (docs, FAQ, SEO landings).
   The landing page (index.html) and auth flows keep their own inline CSS.
   These styles match the brand: black canvas, JetBrains Mono accents,
   #00ff87 glow, ultra-fine borders. Designed for long-form content with
   a left nav rail. Mobile collapses the nav to a top dropdown. */

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

html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
    background: var(--bg-0);
    color: var(--fg-0);
    font-family: var(--font-sans);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

body::before {
    content: '';
    position: fixed;
    inset: -50%;
    z-index: 1000;
    pointer-events: none;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── top bar ────────────────────────────────────────────────────────── */
.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1.5rem;
    background: rgba(0, 0, 0, 0.86);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-0);
}

.topbar .brand {
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--fg-0);
}

.topbar .brand .dot { color: var(--accent); }

.topbar nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.topbar nav a {
    color: var(--fg-2);
}

.topbar nav a:hover { color: var(--accent); text-decoration: none; }

.topbar nav .cta {
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 0.4375rem 0.875rem;
}

.topbar nav .cta:hover {
    background: var(--accent);
    color: var(--bg-0);
}

@media (max-width: 640px) {
    .topbar { padding: 0.75rem 1rem; }
    .topbar nav { gap: 0.875rem; font-size: 0.6875rem; letter-spacing: 0.08em; }
    .topbar nav a:not(.cta) { display: none; }
    .topbar nav a.cta { padding: 0.375rem 0.625rem; }
}

/* ── layout ─────────────────────────────────────────────────────────── */
.docs-shell {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 0;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    align-items: start;
}

.docs-nav {
    position: sticky;
    top: 64px;
    padding: 2.25rem 1.25rem 2rem 0;
    border-right: 1px solid var(--border-0);
    font-size: 0.875rem;
    line-height: 1.5;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
}

.docs-nav h4 {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--fg-2);
    margin: 1.75rem 0 0.625rem;
}

.docs-nav h4:first-child { margin-top: 0; }

.docs-nav ul { list-style: none; }

.docs-nav li a {
    display: block;
    padding: 0.3125rem 0 0.3125rem 0.625rem;
    color: var(--fg-1);
    font-weight: 300;
    border-left: 2px solid transparent;
    margin-left: -2px;
    transition: color 140ms var(--ease-out), border-color 140ms var(--ease-out);
}

.docs-nav li a:hover { color: var(--fg-0); text-decoration: none; }

.docs-nav li a.active {
    color: var(--accent);
    border-left-color: var(--accent);
}

.docs-main {
    padding: 2.5rem 0 4rem 2.5rem;
    max-width: 760px;
    min-width: 0;
}

@media (max-width: 880px) {
    .docs-shell {
        grid-template-columns: 1fr;
        padding: 0 1.25rem;
    }
    .docs-nav {
        position: relative;
        top: 0;
        padding: 1.5rem 0;
        border-right: none;
        border-bottom: 1px solid var(--border-0);
        max-height: none;
    }
    .docs-nav h4 { margin-top: 1.25rem; }
    .docs-main { padding: 2rem 0 3rem; }
}

/* ── typography (content) ───────────────────────────────────────────── */
.crumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--fg-2);
    margin-bottom: 1.5rem;
}

.crumb a { color: var(--fg-2); }
.crumb a:hover { color: var(--accent); text-decoration: none; }
.crumb .sep { color: var(--fg-3); }

.docs-main h1 {
    font-size: clamp(1.875rem, 4vw, 2.5rem);
    font-weight: 400;
    letter-spacing: -0.01em;
    line-height: 1.15;
    margin-bottom: 1rem;
}

.docs-main h1 + .lede {
    font-size: 1.125rem;
    font-weight: 300;
    color: var(--fg-1);
    line-height: 1.6;
    margin-bottom: 2.5rem;
    max-width: 60ch;
}

.docs-main h2 {
    font-size: 1.375rem;
    font-weight: 400;
    color: var(--fg-0);
    letter-spacing: -0.005em;
    margin: 3rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-0);
}

.docs-main h3 {
    font-size: 1.0625rem;
    font-weight: 500;
    color: var(--accent);
    margin: 2rem 0 0.625rem;
}

.docs-main p,
.docs-main li {
    font-size: 0.9375rem;
    font-weight: 300;
    color: var(--fg-1);
    margin-bottom: 1rem;
}

.docs-main p strong, .docs-main li strong { color: var(--fg-0); font-weight: 500; }

.docs-main ul, .docs-main ol {
    margin: 0 0 1.25rem 1.5rem;
}

.docs-main li { margin-bottom: 0.5rem; }

.docs-main code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--bg-2);
    color: var(--accent);
    padding: 0.125rem 0.375rem;
    border: 1px solid var(--border-0);
}

.docs-main pre {
    background: var(--bg-1);
    border: 1px solid var(--border-0);
    padding: 1rem 1.25rem;
    margin: 1.25rem 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.55;
    color: var(--fg-1);
}

.docs-main pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: inherit;
}

.docs-main blockquote {
    border-left: 2px solid var(--accent);
    background: var(--accent-dim);
    padding: 0.875rem 1.25rem;
    margin: 1.5rem 0;
    color: var(--fg-1);
    font-size: 0.9375rem;
    font-weight: 300;
}

/* ── callouts ──────────────────────────────────────────────────────── */
.callout {
    border: 1px solid var(--border-1);
    background: var(--bg-1);
    padding: 1rem 1.25rem;
    margin: 1.5rem 0;
}

.callout .tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.callout.warn { border-color: rgba(255, 176, 32, 0.4); background: rgba(255, 176, 32, 0.04); }
.callout.warn .tag { color: var(--warn); }

.callout.risk { border-color: rgba(255, 59, 59, 0.35); background: rgba(255, 59, 59, 0.04); }
.callout.risk .tag { color: var(--alert); }

/* ── tables ────────────────────────────────────────────────────────── */
.docs-main table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.25rem 0;
    font-size: 0.875rem;
}

.docs-main th, .docs-main td {
    padding: 0.625rem 0.875rem;
    text-align: left;
    border-bottom: 1px solid var(--border-0);
    color: var(--fg-1);
    font-weight: 300;
}

.docs-main th {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--fg-2);
    font-weight: 500;
}

/* ── next/prev pager ───────────────────────────────────────────────── */
.pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.875rem;
    margin-top: 3.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-0);
}

.pager a {
    display: block;
    padding: 1rem 1.25rem;
    border: 1px solid var(--border-0);
    color: var(--fg-0);
    transition: border-color 140ms var(--ease-out), background 140ms var(--ease-out);
}

.pager a:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
    text-decoration: none;
}

.pager .label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--fg-2);
    margin-bottom: 0.25rem;
}

.pager .title {
    font-size: 0.9375rem;
    font-weight: 400;
}

.pager .prev { text-align: left; }
.pager .next { text-align: right; }
.pager a:only-child { grid-column: 2; }

@media (max-width: 560px) {
    .pager { grid-template-columns: 1fr; }
    .pager a:only-child { grid-column: 1; }
}

/* ── faq accordion ─────────────────────────────────────────────────── */
.faq-list details {
    border-bottom: 1px solid var(--border-0);
    padding: 1.25rem 0;
}

.faq-list summary {
    cursor: pointer;
    font-size: 1rem;
    font-weight: 400;
    color: var(--fg-0);
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::marker { content: ''; }

.faq-list summary::after {
    content: '+';
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 1.25rem;
    transition: transform 140ms var(--ease-out);
}

.faq-list details[open] summary::after {
    content: '−';
}

.faq-list details > div {
    margin-top: 0.75rem;
    color: var(--fg-1);
    font-size: 0.9375rem;
    font-weight: 300;
    line-height: 1.65;
}

.faq-list details > div p { margin-bottom: 0.75rem; }
.faq-list details > div p:last-child { margin-bottom: 0; }

/* ── footer ────────────────────────────────────────────────────────── */
footer.docs-footer {
    padding: 2.5rem 1.5rem;
    text-align: center;
    border-top: 1px solid var(--border-0);
    margin-top: 4rem;
}

footer.docs-footer .credit {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--fg-2);
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

footer.docs-footer .links {
    margin-top: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

footer.docs-footer .links a {
    color: var(--fg-2);
    margin: 0 0.5rem;
}

footer.docs-footer .links a:hover { color: var(--accent); text-decoration: none; }

/* ── SEO landing helpers ───────────────────────────────────────────── */
.hero {
    max-width: 1080px;
    margin: 0 auto;
    padding: 5rem 1.5rem 4rem;
    text-align: center;
}

.hero .badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    border: 1px solid rgba(0, 255, 135, 0.35);
    padding: 0.3125rem 0.75rem;
    margin-bottom: 1.75rem;
}

.hero h1 {
    font-size: clamp(2.25rem, 5.5vw, 4rem);
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.05;
    margin-bottom: 1.25rem;
    max-width: 22ch;
    margin-left: auto;
    margin-right: auto;
}

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

.hero .sub {
    font-size: clamp(1rem, 1.8vw, 1.1875rem);
    font-weight: 300;
    color: var(--fg-1);
    line-height: 1.55;
    max-width: 56ch;
    margin: 0 auto 2.25rem;
}

.hero .actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero .actions a {
    display: inline-flex;
    align-items: center;
    padding: 0.875rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    border: 1px solid var(--border-1);
    color: var(--fg-0);
    transition: all 140ms var(--ease-out);
}

.hero .actions a.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg-0);
}

.hero .actions a.primary:hover {
    background: var(--fg-0);
    border-color: var(--fg-0);
    text-decoration: none;
}

.hero .actions a.secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

.section {
    max-width: 1080px;
    margin: 0 auto;
    padding: 3.5rem 1.5rem;
    border-top: 1px solid var(--border-0);
}

.section h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
}

.section .section-lede {
    font-size: 1rem;
    color: var(--fg-1);
    font-weight: 300;
    max-width: 60ch;
    margin-bottom: 2.25rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.feature-card {
    border: 1px solid var(--border-0);
    padding: 1.5rem 1.5rem 1.625rem;
    background: var(--bg-1);
}

.feature-card .num {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.18em;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.feature-card h3 {
    font-size: 1.0625rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--fg-0);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--fg-1);
    font-weight: 300;
    line-height: 1.6;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0 0;
    font-size: 0.875rem;
}

.compare-table th, .compare-table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-0);
    color: var(--fg-1);
    font-weight: 300;
}

.compare-table th {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--fg-2);
    font-weight: 500;
}

.compare-table td strong { color: var(--accent); font-weight: 500; }

.cta-strip {
    text-align: center;
    padding: 4rem 1.5rem 5rem;
    border-top: 1px solid var(--border-0);
}

.cta-strip h2 {
    font-size: clamp(1.5rem, 3vw, 2.125rem);
    font-weight: 400;
    margin-bottom: 0.75rem;
}

.cta-strip p {
    color: var(--fg-1);
    font-weight: 300;
    margin-bottom: 1.75rem;
}

.cta-strip a {
    display: inline-block;
    background: var(--accent);
    color: var(--bg-0);
    padding: 0.875rem 1.625rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    border: 1px solid var(--accent);
    transition: all 140ms var(--ease-out);
}

.cta-strip a:hover {
    background: var(--fg-0);
    border-color: var(--fg-0);
    text-decoration: none;
}