/* =================================================================
   marketing.css — SSOT stylesheet for all public marketing pages
   Change tokens here = change everywhere. No page should duplicate these.
   ================================================================= */

/* --- Design Tokens (change once → applies to all marketing pages) --- */
:root {
    --mkt-navy: #1b3a6b;
    --mkt-navy-dk: #0f2244;
    --mkt-white: #ffffff;
    --mkt-text: #1f2328;
    --mkt-text-secondary: #64748b;
    --mkt-text-muted: #656d76;
    --mkt-border: #e2e8f0;
    --mkt-surface: #f8fafc;
    --mkt-surface-alt: #f6f8fa;
    --mkt-link: #0969da;
    --mkt-font: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Override design-system.css tokens for marketing pages.
   Must use :root (pseudo-class, specificity 0,1,0) to beat design-system's :root block.
   html { } is only 0,0,1 and would lose. Since marketing.css loads after design-system.css,
   equal :root specificity means marketing.css wins via cascade order. */
:root {
    --color-success: var(--mkt-navy);
    --color-success-emphasis: var(--mkt-navy-dk);
    --color-success-subtle: color-mix(in srgb, var(--mkt-navy) 8%, transparent);
    --color-success-text: var(--mkt-navy);
    --surface-base: var(--mkt-white);
    --surface-overlay: var(--mkt-white);
    --surface-sunken: var(--mkt-surface);
    --surface-secondary: var(--mkt-surface-alt);
    --surface-panel: var(--mkt-white);
    --text-primary: var(--mkt-text);
    --text-secondary: var(--mkt-text-secondary);
    --text-tertiary: var(--mkt-text-muted);
    --border-default: var(--mkt-border);
    --border-primary: var(--mkt-border);
}

/* Also override light-theme block (specificity 0,1,1 — beats :root) */
html[data-theme='light'], html[data-theme="light"] {
    --color-success: var(--mkt-navy);
    --color-success-emphasis: var(--mkt-navy-dk);
    --color-success-subtle: color-mix(in srgb, var(--mkt-navy) 8%, transparent);
    --color-success-text: var(--mkt-navy);
}

/* --- Reset & Body --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    background: var(--mkt-white);
    color: var(--mkt-text);
    font-family: var(--mkt-font);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* --- Navigation --- */
/* design-system.css sets brand-logo__text to white (for dark sidebar). Override for white nav. */
.marketing-nav .brand-logo__text {
    color: var(--mkt-navy) !important;
}

.marketing-nav {
    background: var(--mkt-white);
    border-bottom: 1px solid var(--mkt-border);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.marketing-nav .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.marketing-nav .nav-links {
    display: flex;
    gap: 28px;
    align-items: center;
}

.marketing-nav .nav-links a:not(.btn) {
    color: var(--mkt-text-secondary);
    text-decoration: none;
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    transition: color var(--transition-medium);
}

.marketing-nav .nav-links a:not(.btn):hover {
    color: var(--mkt-text);
}

/* --- Buttons (extends design-system.css .btn — marketing overrides only) --- */
.marketing-nav .btn,
.hero-buttons .btn,
.cta-buttons .btn,
.research-buttons .btn,
.pricing-cta .btn {
    padding: 10px 20px;
    border-radius: var(--radius-lg);
    font-weight: var(--font-semibold);
    font-size: var(--text-base);
    font-family: inherit;
}

.btn-primary {
    background: var(--mkt-navy);
    color: var(--mkt-white);
    border: 1px solid var(--mkt-navy);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-normal);
}

.btn-primary:hover {
    background: var(--mkt-navy-dk);
    border-color: var(--mkt-navy-dk);
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--mkt-navy);
    border: 1.5px solid color-mix(in srgb, var(--mkt-navy) 35%, transparent);
}

.btn-secondary:hover {
    background: color-mix(in srgb, var(--mkt-navy) 6%, transparent);
    border-color: var(--mkt-navy);
    color: var(--mkt-navy);
    transform: translateY(-1px);
    text-decoration: none;
}

.btn-outline {
    background: transparent;
    color: var(--mkt-navy);
    border: 1.5px solid var(--mkt-navy);
    padding: 8px 16px;
}

.btn-outline:hover {
    background: var(--mkt-navy);
    color: var(--mkt-white);
    transform: translateY(-1px);
}

/* --- Nav button overrides (high specificity to beat design-system.css nav rules) --- */
/* .nav-links.open a in design-system has specificity 0,2,1 — these at 0,3,0+ always win */
.marketing-nav .btn-secondary {
    background: transparent;
    color: var(--mkt-navy);
    border: 1.5px solid color-mix(in srgb, var(--mkt-navy) 35%, transparent);
}
.marketing-nav .btn-secondary:hover {
    background: color-mix(in srgb, var(--mkt-navy) 6%, transparent);
    border-color: var(--mkt-navy);
    color: var(--mkt-navy);
    text-decoration: none;
    transform: translateY(-1px);
}
.marketing-nav .btn-primary {
    background: var(--mkt-navy);
    color: var(--mkt-white);
    border-color: var(--mkt-navy);
}
.marketing-nav .btn-primary:hover {
    background: var(--mkt-navy-dk);
    color: var(--mkt-white);
    border-color: var(--mkt-navy-dk);
    text-decoration: none;
}

/* --- Footer --- */
.marketing-footer {
    border-top: 1px solid var(--mkt-border);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

.marketing-footer .footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: 1rem;
    padding: 0 24px;
}

.marketing-footer .footer-links a {
    color: var(--mkt-text-secondary);
    text-decoration: none;
    font-size: var(--text-base);
    transition: color var(--transition-medium);
}

.marketing-footer .footer-links a:hover {
    color: var(--mkt-text);
}

.marketing-footer .footer-copy {
    color: var(--mkt-text-muted);
    font-size: var(--text-base);
}

/* --- Shared Content Styles --- */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.callout, .highlight {
    background: var(--mkt-surface-alt);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--mkt-navy);
    margin: 2rem 0;
}

.callout strong, .highlight strong {
    color: var(--mkt-navy);
}

/* --- Links --- */
a { color: var(--mkt-link); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Screen-reader only (visually hidden, accessible to AT) */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip to content link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: var(--z-skip-link);
    padding: 8px 16px;
    background: var(--mkt-navy);
    color: var(--mkt-white);
    border-radius: 0 0 8px 8px;
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    text-decoration: none;
}
.skip-link:focus {
    top: 0;
}

/* Focus styles for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--mkt-navy);
    outline-offset: 2px;
}
.btn:focus-visible {
    box-shadow: 0 0 0 4px var(--color-success-subtle);
}

/* External link indicator */
a[target="_blank"]::after {
    content: " \2197";
    font-size: 0.75em;
    vertical-align: super;
}
/* Don't show arrow on buttons styled as links */
.btn[target="_blank"]::after,
.btn-reddit[target="_blank"]::after {
    content: none;
}

/* --- Mobile --- */
@media (max-width: 768px) {
    .marketing-nav .nav-inner { padding: 16px 20px; }
    .marketing-nav .nav-links { gap: var(--space-4); }
    .marketing-footer .footer-links { gap: var(--space-4); }
}

/* ============================================================
   Docs Two-Column Layout (Stripe/Vercel-grade sidebar)
   ============================================================ */
.docs-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: calc(100vh - 64px);
    max-width: 1280px;
    margin: 0 auto;
}

.docs-sidebar {
    position: sticky;
    top: 64px;
    height: calc(100vh - 64px);
    overflow-y: auto;
    border-right: 1px solid var(--mkt-border);
    padding: 28px 0 48px;
    background: var(--mkt-surface);
    scrollbar-width: thin;
    scrollbar-color: var(--mkt-border) transparent;
}

.docs-sidebar__group {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--mkt-text-muted);
    padding: 20px 20px 6px;
    margin-top: 8px;
}

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

.docs-sidebar__link {
    display: block;
    padding: 7px 20px;
    font-size: var(--text-base);
    color: var(--mkt-text-secondary);
    text-decoration: none;
    border-left: 3px solid transparent;
    transition: color var(--transition-fast), background var(--transition-fast);
    line-height: var(--leading-snug);
}

.docs-sidebar__link:hover {
    color: var(--mkt-text);
    background: var(--color-success-subtle);
    text-decoration: none;
}

.docs-sidebar__link--active {
    color: var(--mkt-navy);
    font-weight: var(--font-semibold);
    border-left-color: var(--mkt-navy);
    background: var(--color-success-subtle);
}

.docs-sidebar__link--active:hover {
    color: var(--mkt-navy);
}

.docs-main {
    padding: 40px 48px 80px;
    min-width: 0;
}

.docs-main > :first-child {
    margin-top: 0;
}

@media (max-width: 900px) {
    .docs-main { padding: 32px 24px 60px; }
}

@media (max-width: 768px) {
    .docs-layout {
        grid-template-columns: 1fr;
    }
    .docs-sidebar {
        position: static;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--mkt-border);
        padding: 16px 0 8px;
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-1);
        align-items: center;
        background: var(--mkt-surface-alt);
    }
    .docs-sidebar__group {
        display: none;
    }
    .docs-sidebar__link {
        border-left: none;
        border-bottom: 2px solid transparent;
        padding: 6px 12px;
        font-size: var(--text-base);
        border-radius: var(--radius-md);
    }
    .docs-sidebar__link--active {
        border-left: none;
        border-bottom-color: transparent;
        background: var(--color-success-subtle);
    }
    .docs-main { padding: 24px 16px 48px; }
}

/* prefers-reduced-motion: now in design-system.css (SSOT) */