/* Codex Advisor — shared stylesheet.
   Design tokens intentionally mirror zerodelta.dev so the subdomain reads as
   one system with the parent site. */

:root {
    --bg: #0d1117;
    --panel: #0f141c;
    --panel-soft: rgba(255, 255, 255, 0.03);
    --text: #f5f7fb;
    --muted: #9aa6b2;
    --soft: #6c7a89;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);
    --accent: #00e5ff;
    --accent-dim: rgba(0, 229, 255, 0.12);
    --success: #2dd4bf;
    --warn: #f5b342;
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", "Menlo", "Consolas", monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: var(--mono);
    font-size: 15px;
    color: var(--text);
    line-height: 1.7;
    background: var(--bg);
    display: grid;
    grid-template-columns: minmax(0, 860px);
    align-content: start;
    justify-content: center;
    padding: 40px 18px;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
    opacity: 0.28;
    z-index: -1;
}

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

a:hover,
a:focus-visible {
    text-decoration: underline;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 8px;
    padding: 8px 10px;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    font-size: 0.9rem;
    z-index: 100;
}

.skip-link:focus-visible {
    left: 8px;
}

.wrap {
    width: 100%;
    max-width: none;
    padding: 0 34px;
}

/* ── Shared Zero Delta terminal panel ── */
.site-header {
    border: 1px solid var(--border);
    border-bottom: 0;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    background: var(--panel);
    box-shadow: var(--shadow);
}

.site-header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
    flex-wrap: wrap;
}

.global-brand {
    display: inline-flex;
    align-items: center;
    color: var(--text);
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.global-brand::before {
    content: ">";
    color: var(--accent);
    font-weight: 400;
    margin-right: 0.45em;
}

.global-brand:hover,
.global-brand:focus-visible {
    text-decoration: none;
    color: var(--accent);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.site-nav a {
    color: var(--muted);
}

.site-nav a:hover,
.site-nav a:focus-visible {
    color: var(--accent);
}

.site-nav a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
    border-radius: 2px;
}

.site-nav a[aria-current="page"] {
    color: var(--text);
    text-decoration: none;
}

/* ── Hero ── */
.hero {
    padding: 28px 0 30px;
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--panel);
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    border-radius: 999px;
    font-size: 0.7rem;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--text);
    background: rgba(45, 212, 191, 0.1);
    border: 1px solid rgba(45, 212, 191, 0.25);
}

.status-pill::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 12px rgba(45, 212, 191, 0.7);
}

h1 {
    margin-top: 14px;
    font-size: clamp(1.7rem, 5.2vw, 2.35rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.12;
}

h1::before {
    content: "> ";
    color: var(--accent);
    font-weight: 400;
}

.subhead {
    margin-top: 14px;
    max-width: 62ch;
    color: var(--muted);
    font-size: 1rem;
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-strong);
    font-size: 0.85rem;
    color: var(--text);
    transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
    text-decoration: none;
    border-color: rgba(0, 229, 255, 0.4);
    background: var(--panel-soft);
    transform: translateY(-1px);
}

.btn-primary {
    border-color: rgba(0, 229, 255, 0.35);
    background: var(--accent-dim);
    color: var(--accent);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background: rgba(0, 229, 255, 0.2);
}

/* ── Documentation inside the shared panel ── */
main {
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
    background: var(--panel);
}

main section {
    padding: 30px 0;
    border-bottom: 1px solid var(--border);
}

main section:last-of-type {
    border-bottom: 0;
}

h2 {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 6px;
    display: flex;
    align-items: baseline;
    gap: 9px;
}

h2::before {
    content: ">";
    color: var(--accent);
    font-weight: 400;
}

h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin: 26px 0 6px;
}

p {
    max-width: 74ch;
    color: var(--muted);
    margin: 10px 0;
}

p strong,
li strong {
    color: var(--text);
    font-weight: 700;
}

ul, ol {
    max-width: 74ch;
    margin: 10px 0 10px 20px;
    color: var(--muted);
}

li {
    margin: 5px 0;
}

.lead {
    color: var(--text);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 18px 0 0;
    list-style: none;
    counter-reset: step;
}

.steps li {
    counter-increment: step;
    margin: 0;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--muted);
}

.steps li::before {
    content: "0" counter(step);
    display: block;
    margin-bottom: 8px;
    color: var(--accent);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
}

.steps strong,
.steps span {
    display: block;
}

.steps span {
    margin-top: 5px;
    font-size: 0.86rem;
}

.fact-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 18px;
}

.fact-grid > div {
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.fact-grid span,
.fact-grid strong {
    display: block;
}

.fact-grid span {
    margin-bottom: 5px;
    color: var(--soft);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.fact-grid strong {
    color: var(--text);
    font-size: 0.84rem;
}

.resource-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

.resource-links a {
    padding: 9px 13px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--muted);
}

.resource-links a:hover,
.resource-links a:focus-visible {
    color: var(--accent);
    text-decoration: none;
    border-color: rgba(0, 229, 255, 0.35);
}

/* ── Cards ── */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 12px;
    margin-top: 20px;
}

.card {
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--panel);
}

.card h3 {
    margin: 0 0 6px;
    color: var(--text);
}

.card p {
    margin: 0;
    font-size: 0.88rem;
}

.card-label {
    display: block;
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 8px;
}

/* ── Code ── */
pre {
    margin: 16px 0;
    padding: 16px;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #080b10;
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--text);
}

pre .c {
    color: var(--soft);
}

code {
    font-family: var(--mono);
    font-size: 0.86em;
    padding: 1px 5px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
}

pre code {
    padding: 0;
    background: none;
    font-size: inherit;
}

/* ── Tables ── */
.table-scroll {
    overflow-x: auto;
    margin: 18px 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.84rem;
}

th, td {
    padding: 11px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
    color: var(--muted);
}

th {
    color: var(--text);
    font-weight: 700;
    white-space: nowrap;
    background: var(--panel-soft);
}

tbody tr:last-child td {
    border-bottom: 0;
}

.yes { color: var(--success); }
.no { color: var(--warn); }

/* ── Callout ── */
.callout {
    margin: 18px 0;
    padding: 14px 16px;
    border: 1px solid rgba(0, 229, 255, 0.22);
    border-left-width: 3px;
    border-radius: var(--radius-sm);
    background: rgba(0, 229, 255, 0.05);
}

.callout p {
    margin: 0;
    font-size: 0.88rem;
}

/* ── Doc page header ── */
.doc-head {
    padding: 26px 0 22px;
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--panel);
}

.doc-head h1 {
    margin-top: 8px;
    font-size: clamp(1.5rem, 4.4vw, 2rem);
}

.doc-meta {
    margin-top: 14px;
    font-size: 0.8rem;
    color: var(--soft);
}

.doc-meta div {
    margin: 2px 0;
}

.eyebrow {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--soft);
}

/* ── Footer ── */
.site-footer {
    margin-top: 0;
    padding: 24px 0 30px;
    border: 1px solid var(--border);
    border-top: 0;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    background: var(--panel);
    box-shadow: var(--shadow);
    color: var(--soft);
    font-size: 0.78rem;
}

.site-footer .wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 22px;
    justify-content: space-between;
}

.site-footer a {
    color: var(--muted);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

@media (max-width: 560px) {
    body { padding: 18px 12px; }
    .wrap { padding: 0 18px; }
    .site-header .wrap { min-height: 58px; align-items: flex-start; flex-direction: column; justify-content: center; padding-top: 14px; padding-bottom: 14px; }
    .hero { padding: 22px 0 26px; }
    main section { padding: 26px 0; }
    .site-nav { gap: 10px; font-size: 0.7rem; }
    .steps, .fact-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .btn { transition: none; }
}