/* ================================================================
   LE PRIX DU SABLE — Shared Stylesheet
   Series: mauritan.site (amber) · mauritan.me (teal) · mauritan.xyz (ochre)
   ================================================================ */

:root {
    --accent: #C48A3F;
    --accent-light: #D4A05A;
    --accent-dim: rgba(196,138,63,0.15);
    --accent-glow: rgba(196,138,63,0.06);
    --amber: #D4893A;
    --teal: #4AADAA;
    --red: #C0453A;
    --blue: #3D6EB5;
    --bg: #0A0908;
    --bg-card: #12100E;
    --bg-elevated: #1A1714;
    --border: rgba(196,138,63,0.10);
    --border-strong: rgba(196,138,63,0.22);
    --text: #E8E0D4;
    --text-dim: #9A9080;
    --text-bright: #F5F0E8;
    --display: 'Cormorant Garamond', Georgia, serif;
    --body: 'Outfit', system-ui, sans-serif;
    --mono: 'DM Mono', 'Courier New', monospace;
    --content-width: 74rem;
    --narrow: 54rem;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { background: var(--bg); color: var(--text); font-family: var(--body); font-weight: 300; line-height: 1.7; overflow-x: hidden; }
::selection { background: var(--accent); color: var(--bg); }

h1, h2, h3, h4 { font-family: var(--display); font-weight: 600; line-height: 1.15; color: var(--text-bright); }
p { max-width: 68ch; }
a { color: var(--accent-light); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--text-bright); }

.container { max-width: var(--content-width); margin: 0 auto; padding: 0 2rem; }
.narrow { max-width: var(--narrow); margin: 0 auto; }
.label { font-family: var(--mono); font-size: 0.72rem; font-weight: 400; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }

/* ── NAV ──────────────────────────────── */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(10,9,8,0.88); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    padding: 0.85rem 2rem;
}
.nav-inner {
    max-width: var(--content-width); margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-brand {
    font-family: var(--display); font-weight: 700; font-size: 1.1rem;
    color: var(--accent); text-decoration: none;
}
.nav-links {
    display: flex; gap: 1.6rem; list-style: none; align-items: center;
}
.nav-links a {
    font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--text-dim);
    text-decoration: none; transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--accent-light); }
.nav-lang {
    font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--text-dim);
    border: 1px solid var(--border); padding: 4px 10px;
    transition: all 0.2s; display: inline-block;
}
.nav-lang:hover { color: var(--accent); border-color: var(--accent); }
.nav-links li:has(.nav-lang) { display: inline; }
.nav-links li:has(.nav-lang) + li:has(.nav-lang) { margin-left: -0.5rem; }
.nav-links li:has(.nav-lang) + li:has(.nav-lang) .nav-lang { border-left: none; }
.nav-toggle {
    display: none; flex-direction: column; gap: 4px;
    background: none; border: none; cursor: pointer; padding: 0.5rem;
}
.nav-toggle span {
    width: 20px; height: 2px; background: var(--text-dim);
    transition: all 0.3s;
}

/* ── HERO ─────────────────────────────── */
.hero {
    min-height: 100vh; padding: 10rem 2rem 6rem;
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem;
    align-items: center; position: relative; overflow: hidden;
    max-width: var(--content-width); margin: 0 auto;
}
.hero::after {
    content: ''; position: absolute; top: 10%; right: -10%;
    width: 50vw; height: 50vw;
    background: radial-gradient(ellipse, rgba(196,138,63,0.04) 0%, transparent 70%);
    pointer-events: none;
}
.hero-text { position: relative; z-index: 1; }
.hero-label {
    font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.15em;
    text-transform: uppercase; color: var(--accent); margin-bottom: 2rem;
    opacity: 0; animation: fadeUp 0.7s 0.2s forwards;
}
.hero h1 {
    font-size: clamp(2.8rem, 6vw, 5.5rem); font-weight: 700;
    margin-bottom: 1.5rem; opacity: 0; animation: fadeUp 0.7s 0.4s forwards;
}
.hero h1 em { font-style: italic; color: var(--accent); }
.hero-sub {
    font-family: var(--display); font-size: clamp(1.1rem, 2vw, 1.4rem);
    font-weight: 400; font-style: italic; color: var(--text-dim);
    max-width: 38ch; margin-bottom: 2.5rem;
    opacity: 0; animation: fadeUp 0.7s 0.6s forwards;
}
.hero-cta {
    display: inline-flex; align-items: center; gap: 0.6rem;
    font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--accent); padding: 0.7rem 1.4rem;
    border: 1px solid var(--border-strong); transition: all 0.3s;
    opacity: 0; animation: fadeUp 0.7s 0.8s forwards;
}
.hero-cta:hover { background: var(--accent-dim); color: var(--text-bright); }
.hero-cta .arrow { transition: transform 0.3s; }
.hero-cta:hover .arrow { transform: translateX(4px); }

.hero-numbers {
    position: relative; z-index: 1;
    display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
    opacity: 0; animation: fadeUp 0.7s 0.5s forwards;
}
.hero-card {
    background: var(--bg-card); border: 1px solid var(--border);
    padding: 1.8rem; transition: border-color 0.3s;
}
.hero-card:hover { border-color: var(--border-strong); }
.hero-card .big { font-family: var(--display); font-size: 2.6rem; font-weight: 700; color: var(--accent); line-height: 1; }
.hero-card .unit { font-family: var(--mono); font-size: 0.68rem; color: var(--text-dim); margin-top: 0.4rem; text-transform: uppercase; letter-spacing: 0.06em; }
.hero-card .desc { font-size: 0.88rem; color: var(--text); margin-top: 0.6rem; line-height: 1.5; }

/* ── FINDINGS GRID ────────────────────── */
.findings { padding: 6rem 0; border-top: 1px solid var(--border); }
.findings-header { margin-bottom: 3rem; }
.findings-header h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); margin-top: 0.5rem; }
.finding-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.finding-card {
    background: var(--bg-card); border: 1px solid var(--border);
    padding: 2rem; display: flex; flex-direction: column;
    transition: border-color 0.3s, transform 0.2s;
    text-decoration: none; color: inherit;
}
.finding-card:hover { border-color: var(--border-strong); transform: translateY(-2px); color: inherit; }
.finding-card .finding-num { font-family: var(--mono); font-size: 0.65rem; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1rem; }
.finding-card h3 { font-size: 1.3rem; margin-bottom: 0.8rem; }
.finding-card p { font-size: 0.9rem; color: var(--text-dim); line-height: 1.6; flex: 1; }
.finding-card .finding-stat { margin-top: 1.2rem; padding-top: 1rem; border-top: 1px solid var(--border); font-family: var(--mono); font-size: 0.75rem; color: var(--accent-light); }
.finding-card .read-link { margin-top: 1rem; font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-dim); transition: color 0.3s; }
.finding-card:hover .read-link { color: var(--accent); }

/* ── FEATURED CHART ───────────────────── */
.featured-chart { padding: 6rem 0; border-top: 1px solid var(--border); }
.chart-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 3rem; align-items: start; }
.chart-text .label { margin-bottom: 1rem; display: block; }
.chart-text h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 1rem; }
.chart-text p { font-size: 0.95rem; color: var(--text-dim); margin-bottom: 1rem; line-height: 1.7; }
.chart-text .p-value { font-family: var(--mono); font-size: 0.8rem; color: var(--red); }
.chart-image { background: var(--bg-card); border: 1px solid var(--border); padding: 1rem; overflow: hidden; }
.chart-image img { width: 100%; height: auto; display: block; }

/* Chart wrap for subpages */
.chart-wrap { margin: 2rem 0; background: var(--bg-card); border: 1px solid var(--border); padding: 1.5rem; }
.chart-wrap img { width: 100%; max-width: 100%; height: auto; display: block; }
.chart-caption { font-family: var(--mono); font-size: 0.7rem; color: var(--text-dim); margin-top: 1rem; text-align: center; }

/* Section numbers for subpages */
.section-num { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.75rem; }
.section-lead { font-size: 1.1rem; color: var(--text-bright); margin-bottom: 1.5rem; }

/* Stat row — Taxe Canicule style */
.stat-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin: 2.5rem 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
}
.stat-card {
    text-align: center;
    padding: 2rem 1.5rem;
    border-right: 1px solid var(--border);
}
.stat-card:last-child { border-right: none; }
.stat-card .val {
    font-family: var(--display);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 700;
    color: var(--text-bright);
    line-height: 1;
    display: block;
    margin-bottom: 0.6rem;
}
.stat-card .val span { color: var(--accent); }
.stat-card .desc {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-dim);
    line-height: 1.6;
    display: block;
}

/* ── CORRIDORS ────────────────────────── */
.corridors-strip { padding: 5rem 0; border-top: 1px solid var(--border); }
.corridors-strip .label { margin-bottom: 1.5rem; display: block; }
.corridors-strip h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); margin-bottom: 1rem; }
.corridors-strip > .container > p { color: var(--text-dim); margin-bottom: 3rem; font-size: 1.05rem; font-family: var(--display); font-style: italic; }
.corridor-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.corridor-card {
    padding: 2rem; border: 1px solid var(--border);
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg) 100%);
    position: relative; overflow: hidden;
}
.corridor-card::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; }
.corridor-card.c-route::before { background: var(--accent); }
.corridor-card.c-train::before { background: var(--red); }
.corridor-card.c-south::before { background: var(--teal); }
.corridor-card .corridor-icon { font-size: 1.4rem; margin-bottom: 0.8rem; }
.corridor-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.corridor-card .corridor-name { font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.8rem; }
.c-route .corridor-name { color: var(--accent); }
.c-train .corridor-name { color: var(--red); }
.c-south .corridor-name { color: var(--teal); }
.corridor-card p { font-size: 0.88rem; color: var(--text-dim); line-height: 1.6; }
.corridor-card .corridor-stat { margin-top: 1rem; padding-top: 0.8rem; border-top: 1px solid var(--border); font-family: var(--mono); font-size: 0.75rem; }

/* ── CHARTS GALLERY ───────────────────── */
.charts-gallery { padding: 5rem 0; border-top: 1px solid var(--border); }
.charts-gallery h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 0.5rem; }
.charts-gallery > .container > p { color: var(--text-dim); margin-bottom: 3rem; font-family: var(--display); font-style: italic; }
.gallery-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.gallery-item { background: var(--bg-card); border: 1px solid var(--border); overflow: hidden; transition: border-color 0.3s; }
.gallery-item:hover { border-color: var(--border-strong); }
.gallery-item img { width: 100%; height: auto; display: block; }
.gallery-caption { padding: 1rem 1.2rem; font-size: 0.82rem; color: var(--text-dim); line-height: 1.5; }
.gallery-caption strong { color: var(--text); font-weight: 500; }

/* ── PULLQUOTE ────────────────────────── */
.pullquote-section { padding: 4rem 0; border-top: 1px solid var(--border); }
.pullquote { border-left: 3px solid var(--accent); padding: 2rem 2.5rem; background: var(--accent-glow); }
.pullquote p { font-family: var(--display); font-size: 1.5rem; font-style: italic; color: var(--text-bright); max-width: 50ch; line-height: 1.5; }
.pullquote .attribution { font-family: var(--mono); font-size: 0.72rem; color: var(--text-dim); margin-top: 1rem; }

/* ── SERIES LINKS ─────────────────────── */
.series-section { padding: 5rem 0; border-top: 1px solid var(--border); }
.series-section h2 { font-size: 2rem; margin-bottom: 2rem; }
.series-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.series-card { padding: 2rem; border: 1px solid var(--border); background: var(--bg-card); transition: border-color 0.3s; text-decoration: none; color: inherit; display: block; }
.series-card:hover { border-color: var(--border-strong); color: inherit; }
.series-card .series-label { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; }
.series-card h4 { font-family: var(--display); font-size: 1.3rem; margin: 0.5rem 0; }
.series-card p { font-size: 0.85rem; color: var(--text-dim); }
.s-amber .series-label, .s-amber h4 { color: var(--amber); }
.s-teal .series-label, .s-teal h4 { color: var(--teal); }

/* ── SUBPAGE HERO (smaller) ───────────── */
.page-hero { padding: 8rem 2rem 4rem; border-bottom: 1px solid var(--border); max-width: var(--content-width); margin: 0 auto; }
.page-hero .label { margin-bottom: 1rem; display: block; }
.page-hero h1 { font-size: clamp(2rem, 4.5vw, 3.5rem); margin-bottom: 1rem; }
.page-hero p { font-size: 1.1rem; color: var(--text-dim); font-family: var(--display); font-style: italic; max-width: 50ch; }

/* ── CALLOUT ───────────────────────────── */
.callout { background: var(--bg-card); border-left: 3px solid var(--accent); padding: 1.25rem 1.5rem; margin: 2rem 0; }
.callout h4 { font-size: 0.85rem; color: var(--accent); margin-bottom: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
.callout p { margin: 0; font-size: 0.9rem; color: var(--text-dim); }

/* ── SECTIONS (subpages) ──────────────── */
.section { padding: 4rem 2rem; max-width: var(--narrow); margin: 0 auto; border-bottom: 1px solid var(--border); }
.section:last-of-type { border-bottom: none; }
.section h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 1.5rem; }
.section h3 { font-size: 1.2rem; margin: 2rem 0 1rem; color: var(--text-bright); }
.section p { margin-bottom: 1.2rem; font-size: 0.95rem; line-height: 1.75; }

/* ── PROSE SECTIONS (subpages) ────────── */
.prose { padding: 4rem 0; border-top: 1px solid var(--border); }
.prose h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 1.5rem; }
.prose h3 { font-size: 1.4rem; margin: 2rem 0 1rem; }
.prose p { margin-bottom: 1.2rem; font-size: 0.95rem; color: var(--text); line-height: 1.75; }
.prose strong { color: var(--text-bright); font-weight: 500; }

/* ── CALLOUT ──────────────────────────── */
.callout { background: var(--bg-elevated); border: 1px solid var(--border); padding: 2rem 2.5rem; margin: 2rem 0; }
.callout h4 { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin-bottom: 1rem; }
.callout p { font-size: 0.92rem; }

/* ── FOOTER ───────────────────────────── */
.footer {
    padding: 3rem 2rem; border-top: 1px solid var(--border);
    font-size: 0.82rem; color: var(--text-dim);
}
.footer-links {
    max-width: var(--content-width); margin: 0 auto;
    display: flex; flex-wrap: wrap; justify-content: center; gap: 1.5rem;
    margin-bottom: 2rem;
}
.footer-links a {
    font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.06em;
    text-transform: uppercase; color: var(--text-dim);
    text-decoration: none; transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }
.footer-credit {
    max-width: var(--content-width); margin: 0 auto;
    text-align: center; font-family: var(--mono); font-size: 0.65rem;
    color: var(--text-dim); line-height: 1.8;
}
.footer-credit a { color: var(--text-dim); text-decoration: none; }
.footer-credit a:hover { color: var(--accent); }

/* ── ANIMATIONS ───────────────────────── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(1.2rem); } to { opacity: 1; transform: translateY(0); } }
.reveal { opacity: 0; transform: translateY(1.2rem); transition: opacity 0.6s, transform 0.6s; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ───────────────────────── */
@media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; min-height: auto; padding: 8rem 1.5rem 4rem; gap: 3rem; }
    .finding-cards { grid-template-columns: 1fr; }
    .chart-layout { grid-template-columns: 1fr; }
    .corridor-row { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr; }
    .series-row { grid-template-columns: 1fr; }
    .nav-links { gap: 1rem; }
    .nav-links a { font-size: 0.6rem; }
}
@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .nav-links {
        position: fixed; top: 3.5rem; left: 0; right: 0;
        background: rgba(10,9,8,0.98); backdrop-filter: blur(14px);
        flex-direction: column; padding: 2rem;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%); opacity: 0; pointer-events: none;
        transition: all 0.3s;
    }
    .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-links li { width: 100%; text-align: center; }
    .nav-links a { font-size: 0.85rem; padding: 0.75rem 0; display: block; }
    .footer-links { gap: 1rem; }
}
@media (max-width: 600px) {
    .hero-numbers { grid-template-columns: 1fr; }
    .stat-row { grid-template-columns: 1fr; }
    .stat-card { border-right: none; border-bottom: 1px solid var(--border); padding: 1.5rem 1rem; }
    .stat-card:last-child { border-bottom: none; }
}

/* AI CTA */
.ai-cta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: rgba(67, 97, 238, 0.08);
    border: 1px solid rgba(67, 97, 238, 0.2);
    border-radius: var(--radius-sm);
}

.ai-icon {
    font-size: 1.25rem;
}

.ai-text {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-primary);
}

[dir="rtl"] .ai-cta {
    flex-direction: row-reverse;
}

[dir="rtl"] #chat-widget {
    right: auto;
    left: var(--space-md);
}