/* ============================================================
   BiblioBingo — marketing site
   Tokens sourced from /DESIGN.md and /constants/theme.ts.
   Monochrome core + pastel "sticky note" color-block sections.
   No dark mode: the design system is explicitly light-only.
   ============================================================ */

:root {
    --color-primary: #000000;
    --color-on-primary: #ffffff;
    --color-ink: #000000;
    --color-ink-secondary: rgba(0, 0, 0, 0.6);
    --color-canvas: #ffffff;
    --color-surface-soft: #f7f7f5;
    --color-hairline: #e6e6e6;
    --color-hairline-soft: #f1f1f1;

    --block-lime: #dceeb1;
    --block-lilac: #c5b0f4;
    --block-cream: #f4ecd6;
    --block-pink: #ffe3e3;
    --block-mint: #c8e6cd;
    --block-coral: #ffd4c1;
    --block-navy: #1f1d3d;

    --accent-magenta: #ff3d8b;
    --success: #1ea64a;

    --radius-xs: 2px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-pill: 50px;
    --radius-full: 9999px;

    --space-hair: 1px;
    --space-xxs: 4px;
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;
    --space-section: 64px;

    --font-sans:
        "Inter", "Inter Fallback", system-ui, -apple-system, sans-serif;
    --font-mono:
        "JetBrains Mono", "JetBrains Mono Fallback", "SF Mono", ui-monospace,
        monospace;

    --max-width: 1120px;
}

* {
    box-sizing: border-box;
}

html {
    color-scheme: light;
    height: 100%;
}

body {
    margin: 0;
    min-height: 100%;
    display: flex;
    flex-direction: column;
    font-family: var(--font-sans);
    font-weight: 400;
    color: var(--color-ink);
    background: var(--color-canvas);
    -webkit-font-smoothing: antialiased;
}

body > main {
    flex: 1 0 auto;
}

body > .footer {
    flex-shrink: 0;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
}

.wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

@media (max-width: 640px) {
    .wrap {
        padding: 0 var(--space-lg);
    }
}

/* ─── Nav ─────────────────────────────────────────────────── */

.top-nav {
    background: var(--color-canvas);
    border-bottom: var(--space-hair) solid var(--color-hairline);
}

.top-nav .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 120px;
}

.top-nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
}

.top-nav__logo img {
    height: 100px;
    width: auto;
}

.top-nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-xxs);
    font-size: 16px;
    font-weight: 500;
}

.top-nav__links a {
    text-decoration: none;
    padding: var(--space-xxs) var(--space-md);
    border-radius: var(--radius-pill);
    text-align: center;
    transition:
        background-color 0.15s ease,
        color 0.15s ease;
}

.top-nav__links a:hover {
    background: var(--color-surface-soft);
}

.top-nav--accueil .top-nav__links a[aria-current="page"] {
    background: var(--block-lime);
}

.top-nav--apropos .top-nav__links a[aria-current="page"] {
    background: var(--block-pink);
}

.top-nav--avis .top-nav__links a[aria-current="page"] {
    background: var(--block-lilac);
}

.top-nav--confidentialite .top-nav__links a[aria-current="page"] {
    background: var(--block-coral);
}

@media (max-width: 640px) {
    .top-nav__logo img {
        height: 50px;
    }

    .top-nav__links {
        gap: var(--space-xxs);
        font-size: 14px;
    }

    .top-nav__links a {
        padding: var(--space-xxs) var(--space-sm);
    }
}

/* ─── Buttons ─────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-pill);
    font-family: var(--font-sans);
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.1px;
    padding: 12px 24px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    min-height: 44px;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-on-primary) !important;
    text-decoration: none !important;
}

.btn-secondary {
    background: var(--color-canvas);
    color: var(--color-ink);
    border: var(--space-hair) solid var(--color-hairline);
    text-decoration: none !important;
}

@media (max-width: 640px) {
    .btn {
        font-size: 14px;
    }
}

/* ─── Typography scale ────────────────────────────────────── */

.eyebrow {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 500;
    letter-spacing: 0.54px;
    text-transform: uppercase;
    color: var(--color-ink-secondary);
}

.display-xl {
    font-size: 64px;
    font-weight: 600;
    line-height: 1.05;
    letter-spacing: -1.5px;
    margin: var(--space-lg) 0;
}

.display-lg {
    font-size: 44px;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -1px;
    margin: 0 0 var(--space-md);
}

.headline {
    font-size: 26px;
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: -0.26px;
    margin: 0 0 var(--space-sm);
}

.subhead {
    font-size: 22px;
    font-weight: 400;
    line-height: 1.4;
    letter-spacing: -0.2px;
    margin: auto;
    max-width: 640px;
}

.body-lg {
    font-size: 20px;
    font-weight: 400;
    line-height: 1.5;
}

.body {
    font-size: 18px;
    font-weight: 400;
    line-height: 1.55;
}

@media (max-width: 640px) {
    .display-xl {
        font-size: 36px;
    }
    .display-lg {
        font-size: 32px;
    }
    .subhead {
        font-size: 18px;
    }
    .headline {
        font-size: 24px;
        line-height: 1.2;
    }
    .body-lg {
        font-size: 16px;
        line-height: 1.3;
    }
    .eyebrow {
        font-size: 14px;
    }
}

/* ─── Hero ────────────────────────────────────────────────── */

.hero {
    padding: var(--space-xxl) 0;
    text-align: center;
}

.hero__actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-top: var(--space-xl);
}

.hero__note {
    margin-top: var(--space-md);
    font-size: 14px;
    color: var(--color-ink-secondary);
    text-align: center;
}

.hero__grid {
    margin: var(--space-xxl) auto 0;
    max-width: 320px;
}

@media (max-width: 640px) {
    .hero {
        padding: var(--space-lg) 0;
    }
}

/* Mini bingo grid decoration */
.mini-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xs);
}

.mini-grid span {
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    background: var(--color-surface-soft);
}

.mini-grid span.done {
    background: var(--block-lilac);
}

.mini-grid span.done--pink {
    background: var(--block-pink);
}

.mini-grid span.done--mint {
    background: var(--block-mint);
}

/* ─── Color-block sections ───────────────────────────────── */

.section {
    padding: var(--space-section) 0;
}

.block {
    border-radius: var(--radius-lg);
    padding: var(--space-xxl) var(--space-xl);
}

.block--lime {
    background: var(--block-lime);
}

.block--lilac {
    background: var(--block-lilac);
}

.block--mint {
    background: var(--block-mint);
}

.block--coral {
    background: var(--block-coral);
}

.block--navy {
    background: var(--block-navy);
    color: var(--color-on-primary);
}

.block--navy .eyebrow {
    color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 640px) {
    .section {
        padding: var(--space-xl) 0;
    }

    .block {
        padding: var(--space-lg);
        border-radius: var(--radius-md);
    }
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

@media (max-width: 860px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

.feature-card {
    background: var(--color-canvas);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
}

.feature-card .headline {
    font-size: 20px;
}

/* ─── Footer ──────────────────────────────────────────────── */

.footer {
    border-top: var(--space-hair) solid var(--color-hairline);
    padding: var(--space-xxl) 0;
}

.footer .wrap {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer__links {
    display: flex;
    gap: var(--space-lg);
    font-size: 15px;
}

.footer__links a {
    text-decoration: none;
    color: var(--color-ink-secondary);
}

.footer__links a:hover {
    text-decoration: underline;
}

.footer__caption {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    color: var(--color-ink-secondary);
}

@media (max-width: 640px) {
    .footer {
        padding: var(--space-md) 0 var(--space-xl);
    }

    .footer .wrap {
        justify-content: center;
    }

    .footer__links {
        font-size: 12px;
    }
}

/* ─── Legal / privacy page ────────────────────────────────── */

.legal {
    padding: var(--space-lg) 0;
}

.legal h1 {
    font-size: 40px;
    font-weight: 600;
    letter-spacing: -0.8px;
    margin-bottom: var(--space-xxs);
}

.legal .updated {
    color: var(--color-ink-secondary);
    font-size: 15px;
    margin-bottom: var(--space-xxl);
}

.legal section {
    margin-bottom: var(--space-xl);
    max-width: 760px;
}

.legal h2 {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.2px;
    margin-bottom: var(--space-sm);
}

.legal h3 {
    font-size: 17px;
    font-weight: 600;
    margin: var(--space-md) 0 var(--space-xxs);
}

.legal p,
.legal li {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-ink);
}

.legal ul {
    padding-left: var(--space-lg);
}

.legal a {
    color: var(--color-ink);
    text-decoration: underline;
}

.legal table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-md) 0;
    font-size: 15px;
}

.legal th,
.legal td {
    text-align: left;
    padding: var(--space-sm);
    border-bottom: var(--space-hair) solid var(--color-hairline-soft);
    vertical-align: top;
}

.legal th {
    font-weight: 600;
    color: var(--color-ink-secondary);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

/* ─── Screenshot gallery ──────────────────────────────────── */

.screenshot-strip {
    display: flex;
    gap: var(--space-lg);
    overflow-x: auto;
    padding: var(--space-sm) var(--space-xs) var(--space-lg);
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
}

.screenshot-strip img {
    flex: 0 0 auto;
    width: 235px;
    border-radius: var(--radius-lg);
    border: var(--space-hair) solid var(--color-hairline);
    scroll-snap-align: center;
}

@media (max-width: 640px) {
    .screenshot-strip img {
        width: 220px;
    }
}

/* ─── Cross-promo card ────────────────────────────────────── */

.promo-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    background: var(--color-canvas);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.promo-card img {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-md);
    flex: 0 0 auto;
}

.promo-card__body {
    flex: 1 1 auto;
    text-align: left;
}

.promo-card__body h3 {
    margin: 0 0 var(--space-xxs);
}

.promo-card__body p {
    margin: 0 0 var(--space-sm);
}

@media (max-width: 560px) {
    .promo-card {
        flex-direction: column;
        text-align: center;
    }
    .promo-card__body {
        text-align: center;
    }
}

/* ─── Embedded form ───────────────────────────────────────── */

.form-embed {
    margin: 0 auto;
}

.form-embed iframe {
    width: 100%;
}

.form-embed-mobile {
    display: none;
    text-align: center;
}

@media (max-width: 640px) {
    .form-embed {
        display: none;
    }

    .form-embed-mobile {
        display: block;
    }
}