/* OpenSeat marketing site — tokens from docs/OPENSEAT_DESIGN_SYSTEM.md */

:root {
    --green-700: #1f5229;
    --green-600: #2d7a3e;
    --green-100: #e8f5e9;
    --blue-600: #2563eb;
    --blue-050: #eff6ff;
    --cream-050: #fdf8f3;
    --white: #ffffff;
    --ink-900: #0f172a;
    --slate-600: #5b6676;
    --slate-400: #94a3b8;
    --sand-200: #e7ddc9;
    --control-border: #8290a3;

    --bg: var(--cream-050);
    --surface: var(--white);
    --text: var(--ink-900);
    --text-secondary: var(--slate-600);
    --primary: var(--green-600);
    --primary-dark: var(--green-700);
    --link: var(--blue-600);
    --border: var(--sand-200);

    --radius-control: 8px;
    --radius-card: 16px;
    --radius-panel: 20px;

    --font-serif: "Source Serif Pro", Georgia, serif;
    --font-sans: "Nunito", system-ui, sans-serif;

    --nav-h: 64px;
    --space-page: clamp(1.25rem, 5vw, 3rem);
}

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

html {
    scroll-behavior: smooth;
}

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

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

body {
    min-width: 320px;
    color: var(--text);
    background: var(--bg);
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 600;
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
}

.skip-link {
    position: fixed;
    top: 10px;
    left: 12px;
    z-index: 5000;
    padding: 10px 14px;
    border-radius: var(--radius-control);
    color: var(--white);
    background: var(--link);
    font-size: 13px;
    font-weight: 800;
    text-decoration: none;
    transform: translateY(-160%);
    transition: transform 120ms ease;
}

.skip-link:focus {
    transform: translateY(0);
}

:focus-visible {
    outline: 2px solid var(--link);
    outline-offset: 3px;
}

.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-h);
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(12px);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(1120px, calc(100% - 2 * var(--space-page)));
    height: 100%;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 28px;
    width: auto;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 14px;
    color: var(--text);
    font-size: 14px;
    font-weight: 800;
    text-decoration: none;
    border-radius: var(--radius-control);
    transition: color 180ms ease, background 180ms ease;
}

.nav-link:hover {
    color: var(--primary);
    background: color-mix(in srgb, var(--green-100) 70%, transparent);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 18px;
    border: 0;
    border-radius: var(--radius-control);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 800;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
    transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    color: var(--white);
    background: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--white);
}

.btn-lg {
    min-height: 48px;
    padding: 0 22px;
}

.site-footer {
    padding: 48px var(--space-page) 32px;
    border-top: 1px solid var(--border);
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 32px;
    width: min(1120px, 100%);
    margin: 0 auto;
}

.footer-brand p {
    max-width: 36ch;
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.65;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 32px 48px;
}

.footer-col h2 {
    margin-bottom: 12px;
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.footer-col ul {
    list-style: none;
}

.footer-col a {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: color 160ms ease;
}

.footer-col a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 4px;
    margin-top: 16px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--text-secondary);
    border-radius: var(--radius-control);
    transition: color 160ms ease, background 160ms ease;
}

.social-links a:hover {
    color: var(--primary);
    background: var(--green-100);
}

.footer-bottom {
    width: min(1120px, 100%);
    margin: 32px auto 0;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    color: var(--slate-400);
    font-size: 12px;
    font-weight: 700;
}

.legal-main {
    width: min(760px, calc(100% - 2 * var(--space-page)));
    margin: 0 auto;
    padding: calc(var(--nav-h) + 48px) 0 80px;
}

.legal-main h1 {
    margin-bottom: 8px;
    font-family: var(--font-serif);
    font-size: clamp(30px, 5vw, 38px);
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -0.025em;
}

.legal-main .meta,
.legal-main .effective-date {
    margin-bottom: 32px;
    color: var(--text-secondary);
    font-size: 14px;
}

.legal-main strong {
    color: var(--text);
}

.legal-main h2 {
    margin: 32px 0 12px;
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    line-height: 1.25;
}

.legal-main h3 {
    margin: 24px 0 8px;
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 600;
}

.legal-main p,
.legal-main li {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.65;
}

.legal-main p + p,
.legal-main ul {
    margin-top: 12px;
}

.legal-main ul,
.legal-main ol {
    padding-left: 1.25rem;
}

.legal-main a {
    color: var(--link);
}

.tos-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.tos-tab-btn {
    min-height: 44px;
    padding: 0 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-control);
    background: var(--surface);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
}

.tos-tab-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.tos-tab-btn.active,
.tos-tab-btn.is-active,
.tos-tab-btn[aria-selected="true"] {
    color: var(--white);
    background: var(--primary);
    border-color: var(--primary);
}

.tos-tab-btn.active:hover,
.tos-tab-btn.is-active:hover,
.tos-tab-btn[aria-selected="true"]:hover {
    color: var(--white);
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.tos-content {
    display: none;
}

.tos-content.active,
.tos-content.is-active {
    display: block;
}