/* ============================================================
   WhiteL — Feuille de style globale
   Direction : éditorial industriel raffiné
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600;9..144,700&family=Manrope:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --ink: #0A0A0A;
    --ink-soft: #1F1D1B;
    --paper: #F5F2ED;
    --paper-warm: #EDE8E0;
    --rule: #2A2724;
    --rule-soft: #D9D3C7;
    --copper: #C8633F;
    --copper-deep: #A14E2E;
    --muted: #6B6661;

    --serif: 'Fraunces', 'Times New Roman', serif;
    --sans: 'Manrope', system-ui, sans-serif;
    --mono: 'JetBrains Mono', ui-monospace, monospace;

    --max: 1320px;
    --gutter: clamp(1.25rem, 4vw, 3rem);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--sans);
    font-weight: 400;
    color: var(--paper);
    background: var(--ink);
    line-height: 1.55;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- Typographie ---------- */

.eyebrow {
    font-family: var(--mono);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--copper);
}

h1, h2, h3, h4 {
    font-family: var(--serif);
    font-weight: 400;
    line-height: 1.05;
    letter-spacing: -0.015em;
    font-variation-settings: "opsz" 144;
}

h1 { font-size: clamp(2.4rem, 6vw, 5.2rem); }
h2 { font-size: clamp(1.8rem, 4vw, 3.4rem); font-variation-settings: "opsz" 96; }
h3 { font-size: clamp(1.3rem, 2.4vw, 1.85rem); font-variation-settings: "opsz" 36; }
h4 { font-size: 1.05rem; font-variation-settings: "opsz" 14; font-weight: 500; }

p { max-width: 62ch; }

/* ---------- Layout ---------- */

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

section { padding-block: clamp(4rem, 9vw, 7rem); }

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

.site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--rule);
}

.site-header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 1.1rem;
}

.logo {
    font-family: var(--serif);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.02em;
}
.logo span { color: var(--copper); }

.nav { display: flex; gap: 2.2rem; align-items: center; }
.nav a {
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color .25s ease;
    position: relative;
}
.nav a:hover { color: var(--copper); }
.nav a.cta {
    border: 1px solid var(--copper);
    padding: 0.55rem 1rem;
    color: var(--copper);
}
.nav a.cta:hover { background: var(--copper); color: var(--ink); }

/* ---------- Sélecteur de langue ---------- */
.lang-switch {
    position: relative;
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.lang-switch button {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    background: transparent;
    border: 1px solid var(--rule);
    color: var(--paper);
    padding: 0.5rem 0.85rem;
    cursor: pointer;
    font: inherit;
    letter-spacing: inherit;
    text-transform: inherit;
    transition: border-color .2s ease, color .2s ease;
}
.lang-switch button:hover { border-color: var(--copper); color: var(--copper); }
.lang-switch button .chev {
    font-size: 0.6rem;
    transition: transform .2s ease;
}
.lang-switch[aria-expanded="true"] button .chev { transform: rotate(180deg); }

.lang-menu {
    position: absolute;
    top: calc(100% + 0.4rem);
    right: 0;
    min-width: 9rem;
    background: var(--ink);
    border: 1px solid var(--rule);
    list-style: none;
    padding: 0.4rem 0;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: opacity .2s ease, transform .2s ease, visibility .2s;
    z-index: 60;
}
.lang-switch[aria-expanded="true"] .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.lang-menu li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.7rem 1rem;
    color: var(--paper);
    text-transform: uppercase;
    transition: background .2s ease, color .2s ease;
}
.lang-menu li a:hover,
.lang-menu li a[aria-current="true"] {
    background: var(--ink-soft);
    color: var(--copper);
}
.lang-menu li a .tag {
    font-size: 0.65rem;
    color: var(--muted);
    letter-spacing: 0.12em;
}
.lang-menu li a[aria-current="true"] .tag { color: var(--copper); }

.burger { display: none; background: none; border: 0; color: var(--paper); font-size: 1.4rem; cursor: pointer; }

@media (max-width: 820px) {
    .nav { display: none; }
    .burger { display: block; }
    .nav.open {
        display: flex;
        position: absolute; top: 100%; left: 0; right: 0;
        flex-direction: column; align-items: flex-start;
        background: var(--ink); border-bottom: 1px solid var(--rule);
        padding: 1.5rem var(--gutter); gap: 1.25rem;
    }
}

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

.hero {
    padding-top: clamp(4rem, 8vw, 7rem);
    padding-bottom: clamp(3rem, 6vw, 5rem);
    border-bottom: 1px solid var(--rule);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute; inset: 0;
    background:
        radial-gradient(circle at 80% 20%, rgba(200, 99, 63, 0.12), transparent 50%),
        radial-gradient(circle at 10% 80%, rgba(200, 99, 63, 0.06), transparent 60%);
    pointer-events: none;
}

.hero .wrap { position: relative; z-index: 1; display: grid; gap: 2.5rem; }

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: clamp(2rem, 5vw, 4rem);
    align-items: center;
}
@media (max-width: 820px) { .hero-grid { grid-template-columns: 1fr; } }

.hero-text { min-width: 0; }

.hero-video {
    position: relative;
    aspect-ratio: 4 / 5;
    overflow: hidden;
    background: var(--ink-soft);
    border: 1px solid var(--rule);
}
.hero-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    filter: contrast(1.05) saturate(0.92);
}
.hero-video-frame {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(180deg, rgba(10,10,10,0.0) 60%, rgba(10,10,10,0.45) 100%),
        radial-gradient(circle at center, transparent 70%, rgba(10,10,10,0.25) 100%);
}
@media (max-width: 820px) {
    .hero-video { aspect-ratio: 16 / 9; }
}

.hero h1 {
    font-weight: 300;
}
.hero h1 em {
    font-style: italic;
    font-weight: 400;
    color: var(--copper);
}

.hero .lead {
    font-size: 1.05rem;
    color: var(--paper-warm);
    line-height: 1.7;
}

.hero-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--rule);
}
.hero-meta div .eyebrow { display: block; margin-bottom: 0.4rem; }
.hero-meta div p {
    font-family: var(--serif);
    font-size: 1.1rem;
    color: var(--paper);
    font-variation-settings: "opsz" 24;
}
@media (max-width: 600px) { .hero-meta { grid-template-columns: 1fr; } }

/* ---------- Section : expertise ---------- */

.expertise {
    background: var(--paper);
    color: var(--ink);
}
.expertise .eyebrow { color: var(--copper-deep); }
.expertise h2 { color: var(--ink); max-width: 18ch; margin-block: 1rem 2rem; }
.expertise p,
.expertise .two-col .col-main p { color: var(--ink-soft); font-size: 1.05rem; line-height: 1.75; }
.expertise .two-col .col-main p:first-of-type::first-letter { color: var(--copper-deep); }
.expertise strong { color: var(--ink); font-weight: 600; }

.brand-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: clamp(1.5rem, 4vw, 3.5rem);
    margin-block: 3.5rem;
    padding-block: 2rem;
    border-block: 1px solid var(--rule-soft);
}
.brand-row span {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.15rem;
    color: var(--ink);
    font-variation-settings: "opsz" 24;
    opacity: 0.85;
}

/* ---------- Personas ---------- */

.personas { background: var(--ink); }
.personas .eyebrow { display: block; margin-bottom: 0.8rem; }
.personas h2 { max-width: 22ch; margin-bottom: 3rem; }

.persona-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--rule);
    border: 1px solid var(--rule);
}
@media (max-width: 720px) { .persona-grid { grid-template-columns: 1fr; } }

.persona {
    background: var(--ink);
    padding: clamp(1.75rem, 3vw, 2.5rem);
    transition: background .35s ease;
    position: relative;
}
.persona:hover { background: var(--ink-soft); }
.persona .num {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--copper);
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}
.persona h3 {
    margin-bottom: 1rem;
    font-weight: 500;
}
.persona p {
    color: var(--paper-warm);
    font-size: 0.98rem;
    line-height: 1.65;
}

/* ---------- CTA bandeau ---------- */

.cta-band {
    background: var(--paper);
    color: var(--ink);
    text-align: left;
}
.cta-band .wrap {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 3rem;
    align-items: center;
}
@media (max-width: 820px) { .cta-band .wrap { grid-template-columns: 1fr; } }
.cta-band h2 {
    color: var(--ink);
    max-width: 18ch;
    font-weight: 300;
}
.cta-band h2 em { color: var(--copper-deep); font-style: italic; }
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 1.75rem;
    background: var(--ink);
    color: var(--paper);
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: all .3s ease;
    border: 1px solid var(--ink);
}
.btn:hover { background: var(--copper); border-color: var(--copper); color: var(--ink); }
.btn .arrow { transition: transform .3s ease; }
.btn:hover .arrow { transform: translateX(4px); }

.btn-outline {
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--ink);
}
.btn-outline:hover { background: var(--ink); color: var(--paper); }

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

.site-footer {
    background: var(--ink);
    border-top: 1px solid var(--rule);
    padding: 4rem 0 2rem;
}
.foot-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2.5rem;
    margin-bottom: 3rem;
}
@media (max-width: 820px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .foot-grid { grid-template-columns: 1fr; } }

.foot-grid h4 {
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--copper);
    margin-bottom: 1.25rem;
    font-weight: 500;
}
.foot-grid ul { list-style: none; display: grid; gap: 0.7rem; }
.foot-grid a, .foot-grid p { font-size: 0.92rem; color: var(--paper-warm); }
.foot-grid a:hover { color: var(--copper); }

.foot-bottom {
    border-top: 1px solid var(--rule);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    color: var(--muted);
    text-transform: uppercase;
}

/* ---------- Pages internes : intro ---------- */

.page-intro {
    padding-top: clamp(5rem, 10vw, 8rem);
    padding-bottom: clamp(3rem, 5vw, 4rem);
    border-bottom: 1px solid var(--rule);
}
.page-intro .eyebrow { display: block; margin-bottom: 1.2rem; }
.page-intro h1 { max-width: 18ch; font-weight: 300; }
.page-intro h1 em { font-style: italic; color: var(--copper); }
.page-intro .lead {
    margin-top: 1.5rem;
    font-size: 1.1rem;
    color: var(--paper-warm);
    max-width: 60ch;
    line-height: 1.7;
}

/* ---------- Two-column generic ---------- */

.two-col {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
}
@media (max-width: 820px) { .two-col { grid-template-columns: 1fr; } }

.two-col .col-side h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
.two-col .col-main p {
    margin-bottom: 1.2rem;
    color: var(--paper-warm);
    font-size: 1.02rem;
    line-height: 1.75;
}
.two-col .col-main p:first-of-type::first-letter {
    font-family: var(--serif);
    font-size: 3.2rem;
    float: left;
    line-height: 1;
    padding-right: 0.6rem;
    padding-top: 0.3rem;
    color: var(--copper);
    font-variation-settings: "opsz" 144;
}

/* ---------- Liste de solutions ---------- */

.solutions-list {
    list-style: none;
    border-top: 1px solid var(--rule);
}
.solutions-list li {
    border-bottom: 1px solid var(--rule);
    padding-block: 2.5rem;
    display: grid;
    grid-template-columns: 80px 1fr 1.5fr;
    gap: 2rem;
    align-items: start;
}
@media (max-width: 720px) {
    .solutions-list li { grid-template-columns: 1fr; gap: 0.75rem; }
}
.solutions-list .num {
    font-family: var(--mono);
    color: var(--copper);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}
.solutions-list h3 { font-weight: 500; }
.solutions-list p { color: var(--paper-warm); }

/* ---------- Articles (actualités) ---------- */

.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2.5rem;
}
.article {
    border-top: 2px solid var(--copper);
    padding-top: 1.5rem;
}
.article .meta {
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
    margin-bottom: 1rem;
}
.article h3 { font-weight: 500; margin-bottom: 0.8rem; }
.article p { color: var(--paper-warm); font-size: 0.95rem; }
.article .more {
    display: inline-block;
    margin-top: 1.2rem;
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--copper);
    border-bottom: 1px solid var(--copper);
    padding-bottom: 2px;
}

/* ---------- Formulaire contact ---------- */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: clamp(2rem, 5vw, 4rem);
}
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-info h3 {
    font-weight: 500;
    margin-bottom: 0.4rem;
    margin-top: 1.8rem;
}
.contact-info h3:first-child { margin-top: 0; }
.contact-info p { color: var(--paper-warm); }

form { display: grid; gap: 1.5rem; }
.field { display: grid; gap: 0.5rem; }
.field label {
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--copper);
}
.field input, .field textarea, .field select {
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--rule);
    padding: 0.8rem 0;
    color: var(--paper);
    font-family: var(--sans);
    font-size: 1rem;
    transition: border-color .25s ease;
}
.field input:focus, .field textarea:focus, .field select:focus {
    outline: 0;
    border-bottom-color: var(--copper);
}
.field textarea { min-height: 120px; resize: vertical; }
form button {
    justify-self: start;
    margin-top: 1rem;
    cursor: pointer;
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 1rem 1.75rem;
    background: var(--copper);
    color: var(--ink);
    border: 0;
    transition: background .25s ease;
}
form button:hover { background: var(--copper-deep); color: var(--paper); }

/* ---------- Animations subtiles ---------- */

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
.hero h1, .hero .lead, .hero-meta { animation: fadeUp .9s ease both; }
.hero .lead { animation-delay: .15s; }
.hero-meta { animation-delay: .3s; }

/* ---------- Note placeholder visible (à retirer en prod) ---------- */
.placeholder {
    border: 1px dashed var(--copper);
    padding: 1rem 1.25rem;
    background: rgba(200, 99, 63, 0.06);
    font-family: var(--mono);
    font-size: 0.8rem;
    color: var(--copper);
    margin-block: 1.5rem;
}