/* ============================================
   Facilia.ca — Editorial Swiss Minimalism
   ============================================ */

:root {
    --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --color-ink: #1a1a1a;
    --color-ink-soft: #5a5a5a;
    --color-ink-muted: #8a8a8a;
    --color-accent: #1a5c5c;
    --color-accent-hover: #134545;
    --color-surface: #ffffff;
    --color-surface-dim: #f5f5f3;
    --color-rule: #d4d4d0;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --container: 48rem;
}

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

html {
    font-size: 112.5%; /* 18px base */
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    color: var(--color-ink);
    background: var(--color-surface);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
    color: var(--color-accent-hover);
}

/* ---- Header ---- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-surface);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-rule);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-header .logo {
    display: block;
    line-height: 0;
}

.site-header .logo img {
    height: 7rem;
    width: auto;
}

.site-header .logo:hover {
    color: var(--color-accent);
}

.site-header nav {
    display: flex;
    gap: var(--space-md);
}

.site-header nav a {
    font-size: 0.85rem;
    color: var(--color-ink-soft);
    letter-spacing: 0.02em;
}

.site-header nav a:hover {
    color: var(--color-ink);
}

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

.hero {
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--color-rule);
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    max-width: 18ch;
    margin-bottom: var(--space-md);
}

.hero .lead {
    font-size: 1.15rem;
    color: var(--color-ink-soft);
    max-width: 52ch;
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.btn {
    display: inline-block;
    padding: 0.85rem 2rem;
    background: var(--color-accent);
    color: var(--color-surface);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn:hover {
    background: var(--color-accent-hover);
    color: var(--color-surface);
}

/* ---- Credibility ---- */

.credibility {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-rule);
}

.credibility p {
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
    text-align: center;
}

/* ---- Audience Cards ---- */

.audience {
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--color-rule);
}

.audience .section-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-ink-muted);
    margin-bottom: var(--space-lg);
}

.cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.card {
    padding: var(--space-md);
    background: var(--color-surface-dim);
    border: 1px solid var(--color-rule);
}

.card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--space-sm);
}

.card p {
    font-size: 0.95rem;
    color: var(--color-ink-soft);
    margin-bottom: var(--space-sm);
}

.card .card-link {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* ---- Methodology ---- */

.methodology {
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--color-rule);
}

.methodology .section-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-ink-muted);
    margin-bottom: var(--space-lg);
}

.method-items {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.method-item {
    display: grid;
    grid-template-columns: 3rem 1fr;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-top: 1px solid var(--color-rule);
}

.method-item .method-num {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    color: var(--color-accent);
    letter-spacing: -0.04em;
}

.method-item h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.method-item p {
    font-size: 0.95rem;
    color: var(--color-ink-soft);
}

/* ---- Collaboration ---- */

.collaboration {
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--color-rule);
}

.collaboration .section-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-ink-muted);
    margin-bottom: var(--space-lg);
}

.collab-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
}

.collab-item {
    display: grid;
    grid-template-columns: 2.5rem 1fr;
    align-items: start;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    border-top: 1px solid var(--color-rule);
}

.collab-icon {
    display: block;
    width: 2.4rem;
    height: 2.4rem;
    background: var(--color-accent);
}

.collab-icon.medium {
    width: 1.4rem;
    height: 1.4rem;
}

.collab-icon.small {
    width: 0.6rem;
    height: 0.6rem;
}

.collab-item strong {
    display: block;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.15rem;
}

.collab-item span {
    font-size: 0.85rem;
    color: var(--color-ink-soft);
}

/* ---- Form ---- */

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

.form-section .section-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-ink-muted);
    margin-bottom: var(--space-xs);
}

.form-section h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.form-errors {
    padding: var(--space-sm);
    background: #fef2f2;
    border: 1px solid #e5c5c5;
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
    color: #7f1d1d;
}

.form-errors ul {
    list-style: none;
}

.form-errors li::before {
    content: "— ";
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-xs);
    color: var(--color-ink);
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 0.75rem;
    font-family: var(--font);
    font-size: 1rem;
    color: var(--color-ink);
    background: var(--color-surface);
    border: 1px solid var(--color-rule);
    outline: none;
    transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
    border-color: var(--color-accent);
}

textarea {
    min-height: 8rem;
    resize: vertical;
}

.form-note {
    margin-top: var(--space-md);
    font-size: 0.8rem;
    color: var(--color-ink-muted);
}

.form-note a {
    color: var(--color-ink-muted);
    text-decoration: underline;
}

.form-note a:hover {
    color: var(--color-ink);
}

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

.site-footer {
    padding: var(--space-md) 0;
    border-top: 1px solid var(--color-rule);
}

.site-footer .container {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.site-footer p {
    font-size: 0.8rem;
    color: var(--color-ink-muted);
}

.site-footer nav {
    display: flex;
    gap: var(--space-md);
}

.site-footer nav a {
    font-size: 0.8rem;
    color: var(--color-ink-muted);
}

.site-footer nav a:hover {
    color: var(--color-ink);
}

/* ---- Responsive ---- */

@media (max-width: 768px) {
    .cards {
        grid-template-columns: 1fr;
    }

    .collab-grid {
        grid-template-columns: 1fr;
    }

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

    .audience,
    .methodology,
    .collaboration,
    .form-section {
        padding: var(--space-lg) 0;
    }

    .site-header .container {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .site-footer .container {
        flex-direction: column;
        text-align: center;
    }

    .site-footer nav {
        justify-content: center;
    }
}

/* ---- Print ---- */

@media print {
    .site-header nav,
    .form-section,
    .site-footer nav {
        display: none;
    }
}