/* Marketing-site layer on top of Oat's own CSS/utilities. Everything here is
   layout/composition that Oat itself doesn't provide an opinion on. */

html {
    scroll-behavior: smooth;
    scroll-padding-top: 4.5rem;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}

body {
    margin: 0;
}

a.unstyled, .site-nav a {
    text-decoration: none;
}

.container {
    max-width: 1120px;
    margin-inline: auto;
    padding-inline: var(--space-6);
}

/* ---------- Top nav ---------- */

.site-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: var(--space-6);
    padding: var(--space-3) var(--space-6);
    background-color: rgb(from var(--background) r g b / 0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

#nav-toggle {
    display: none;
}

.site-nav .brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--font-semibold);
    font-size: var(--text-5);
    color: var(--foreground);
    margin-inline-end: auto;
}

.site-nav .brand img {
    width: 1.5rem;
    height: 1.5rem;
}

.site-nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-5);
    font-size: var(--text-7);
}

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

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

@media (max-width: 720px) {
    #nav-toggle {
        display: inline-flex;
    }

    .site-nav-links {
        position: absolute;
        top: 100%;
        inset-inline: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: var(--space-3) var(--space-6);
        background-color: var(--background);
        border-bottom: 1px solid var(--border);
    }

    .site-nav-links a {
        padding-block: var(--space-3);
    }

    .site-nav-links[hidden] {
        display: none;
    }
}

/* ---------- Sections ---------- */

.section {
    padding-block: var(--space-16);
}

.section-alt {
    background-color: var(--faint);
}

.section-header {
    max-width: 640px;
    margin-block-end: var(--space-8);
}

.section-header .eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: var(--text-8);
    font-weight: var(--font-semibold);
    color: var(--primary);
}

.section-header h2 {
    margin-block-start: var(--space-2);
}

.section-header p {
    color: var(--muted-foreground);
}

/* ---------- Hero ---------- */

.hero {
    padding-block: var(--space-18) var(--space-16);
    text-align: center;
}

.hero .eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: var(--text-7);
    font-weight: var(--font-semibold);
    color: var(--primary);
}

.hero h1 {
    font-size: clamp(2.25rem, 1.6rem + 3vw, 3.75rem);
    margin-block: var(--space-4);
}

.hero .tagline {
    max-width: 640px;
    margin-inline: auto;
    font-size: var(--text-4);
    color: var(--muted-foreground);
}

.hero .badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
    margin-block: var(--space-6);
}

.hero .cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
    margin-block-start: var(--space-6);
}

/* ---------- Feature grid ---------- */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: var(--space-5);
}

.feature-grid .card h3 {
    margin-block-start: 0;
    font-size: var(--text-4);
}

.feature-grid .card p {
    color: var(--muted-foreground);
    margin-block-end: 0;
}

/* ---------- Quick start ---------- */

.steps {
    display: grid;
    gap: var(--space-6);
    counter-reset: step;
}

.step {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-4);
}

.step .step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: var(--radius-full);
    background-color: var(--primary);
    color: var(--primary-foreground);
    font-weight: var(--font-semibold);
    flex-shrink: 0;
}

.step h3 {
    margin-block: 0 var(--space-2);
}

.step pre {
    margin-block-end: 0;
}

/* ---------- AppLayout demo ---------- */

.applayout-intro {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

@media (min-width: 900px) {
    .applayout-intro {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

.applayout-demo-wrap {
    position: sticky;
    top: 5rem;
}

.applayout-demo-caption {
    font-size: var(--text-7);
    color: var(--muted-foreground);
    margin-block-start: var(--space-2);
    text-align: center;
}

.applayout-demo {
    border: 1px solid var(--border);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-large);
    overflow: hidden;
}

.applayout-demo [data-sidebar-layout] {
    height: 420px;
    --sidebar-width: 12rem;
}

.applayout-demo [data-sidebar] nav {
    font-size: var(--text-8);
}

.applayout-demo main {
    padding-inline: var(--space-5);
}

.applayout-demo main h3 {
    margin-block-start: var(--space-4);
}

/* ---------- Component showcase ---------- */

.showcase-group {
    margin-block-end: var(--space-10);
}

.showcase-group > h3 {
    font-size: var(--text-3);
    border-bottom: 1px solid var(--border);
    padding-block-end: var(--space-2);
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-5);
    margin-block-start: var(--space-5);
}

.showcase-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-medium);
    background-color: var(--card);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.showcase-card .showcase-preview {
    padding: var(--space-6);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: 5rem;
    flex: 1;
}

.showcase-card .showcase-footer {
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid var(--border);
    background-color: var(--faint);
}

.showcase-card .showcase-footer strong {
    display: block;
    font-size: var(--text-7);
}

.showcase-card .showcase-footer code {
    font-size: var(--text-8);
    color: var(--muted-foreground);
    background: none;
    padding: 0;
    word-break: break-word;
}

/* ---------- Tutorial ---------- */

.tutorial-preview {
    padding: var(--space-6);
    border: 1px solid var(--border);
    border-radius: var(--radius-medium);
    background-color: var(--card);
}

.tutorial-preview .vstack {
    max-width: 420px;
}

/* ---------- Theming ---------- */

.theme-switcher {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.theme-swatch {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-medium);
}

.theme-swatch .dot {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: var(--radius-full);
    background-color: var(--primary);
    box-shadow: 0 0 0 2px var(--background);
}

/* ---------- Footer ---------- */

.site-footer {
    padding-block: var(--space-10);
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--muted-foreground);
    font-size: var(--text-7);
}

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

.site-footer .footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-block-end: var(--space-3);
}