/* ============================================================
   Faso IA — Pubs IA Professionnelles
   Palette : Blanc / Vert (#29B554) — voir tokens ci-dessous
   ============================================================ */

:root {
    --white: #FFFFFF;
    --green: #29B554;
    --green-dark: #146C35;
    --green-darker: #0D4A24;
    --mint: #EAF7EF;
    --mist: #F5F9F6;
    --ink: #14181A;
    --ink-soft: #4A5550;
    --line: #E1EAE4;

    --font-display: 'Sora', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;

    --radius: 14px;
    --radius-sm: 8px;
    --shadow: 0 10px 30px rgba(20, 24, 26, 0.08);
    --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--ink);
    background: var(--white);
    line-height: 1.55;
}

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

a { color: inherit; }

.wrap {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.wrap-narrow { max-width: 680px; }

.eyebrow {
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.72rem;
    color: var(--green-dark);
    margin: 0 0 0.9rem;
    font-weight: 500;
}

.section-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.7rem, 3.4vw, 2.4rem);
    margin: 0 0 0.7rem;
    letter-spacing: -0.01em;
}

.section-sub {
    color: var(--ink-soft);
    font-size: 1.02rem;
    max-width: 46ch;
    margin: 0 0 2.4rem;
}

.section { padding: 5.5rem 0; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.85rem 1.6rem;
    border-radius: 999px;
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: transform .18s var(--ease), background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
    white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid var(--green-dark); outline-offset: 2px; }

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

.btn-outline {
    background: transparent;
    color: var(--ink);
    border-color: var(--line);
}
.btn-outline:hover { border-color: var(--green); color: var(--green-dark); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 40;
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(20,24,26,0.06);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.logo {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.15rem;
    text-decoration: none;
    color: var(--ink);
    letter-spacing: -0.01em;
}
.logo span { color: var(--green); }

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.4rem;
}
.nav-link {
    text-decoration: none;
    color: var(--ink-soft);
    font-weight: 500;
    font-size: 0.93rem;
    transition: color .15s;
}
.nav-link:hover { color: var(--green-dark); }

.lang-toggle {
    display: flex;
    background: var(--mint);
    border-radius: 999px;
    padding: 3px;
    gap: 2px;
}
.lang-btn {
    border: none;
    background: transparent;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    padding: 0.4rem 0.7rem;
    border-radius: 999px;
    cursor: pointer;
    color: var(--green-dark);
    transition: background .18s, color .18s;
}
.lang-btn.is-active { background: var(--green); color: var(--white); }
.lang-btn:not(.is-active):hover { background: rgba(41,181,84,0.15); }

@media (max-width: 720px) {
    .nav-link { display: none; }
    .header-actions { gap: 0.7rem; }
    .btn-outline { padding: 0.6rem 1rem; font-size: 0.85rem; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
    position: relative;
    min-height: 100svh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--ink);
}
.hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.85;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(13,20,16,0.55) 0%, rgba(13,20,16,0.35) 40%, rgba(10,16,13,0.92) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    padding-top: 6rem;
    padding-bottom: 4rem;
    color: var(--white);
    max-width: 760px;
}
.hero .eyebrow { color: #8FE3AC; }
.hero-title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(2.2rem, 6vw, 4rem);
    line-height: 1.08;
    letter-spacing: -0.02em;
    margin: 0 0 1.3rem;
}
.hero-sub {
    font-size: clamp(1rem, 1.6vw, 1.15rem);
    color: rgba(255,255,255,0.82);
    max-width: 52ch;
    margin: 0 0 2.2rem;
}
.hero .btn-primary {
    font-size: 1.02rem;
    padding: 1rem 2rem;
    box-shadow: 0 8px 24px rgba(41,181,84,0.35);
}

/* Signature element: film-strip / sprocket divider evoking cinema reel */
.film-strip {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 14px;
    z-index: 3;
    background:
        radial-gradient(circle at 16px 7px, var(--white) 4.5px, transparent 4.6px) repeat-x,
        var(--green);
    background-size: 32px 14px, auto;
}
.film-strip--top {
    position: static;
    height: 14px;
    margin-bottom: 3rem;
    border-radius: 999px;
    background:
        radial-gradient(circle at 16px 7px, var(--white) 4.5px, transparent 4.6px) repeat-x,
        var(--mint);
    background-size: 32px 14px, auto;
    border: 1px solid var(--line);
}

/* ============================================================
   FORM SECTION
   ============================================================ */
.form-section { background: var(--white); }

.contact-form {
    background: var(--mist);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 2.2rem;
    display: grid;
    gap: 1.3rem;
}
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; }

.field label, .socials-field legend {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--ink);
}
.socials-field legend { padding: 0; }
.socials-field legend small { font-weight: 400; color: var(--ink-soft); }
.req { color: var(--green-dark); }

.field input, .socials-grid input {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1.5px solid var(--line);
    border-radius: var(--radius-sm);
    font-size: 0.98rem;
    font-family: var(--font-body);
    background: var(--white);
    transition: border-color .15s, box-shadow .15s;
}
.field input:focus, .socials-grid input:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 4px rgba(41,181,84,0.13);
}
.field input.is-invalid, .socials-field.is-invalid input {
    border-color: #D9483F;
}

.socials-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
}
@media (max-width: 520px) {
    .socials-grid { grid-template-columns: 1fr; }
}

.field-error {
    display: block;
    color: #B3261E;
    font-size: 0.82rem;
    margin-top: 0.4rem;
    min-height: 1em;
}

.btn-submit { justify-self: start; margin-top: 0.3rem; }

.form-status {
    font-size: 0.92rem;
    font-weight: 500;
    min-height: 1.2em;
    margin: 0;
}
.form-status.success { color: var(--green-dark); }
.form-status.error { color: #B3261E; }

/* ============================================================
   RÉALISATIONS
   ============================================================ */
.realisations-section { background: var(--mint); }

.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.4rem;
}
@media (max-width: 860px) { .video-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .video-grid { grid-template-columns: 1fr; } }

.video-card {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 4 / 5;
    background: var(--ink);
    cursor: pointer;
    box-shadow: var(--shadow);
}
.video-card video, .video-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s var(--ease);
}
.video-card:hover video, .video-card:hover img { transform: scale(1.05); }

.video-card-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    padding: 1.1rem;
    background: linear-gradient(180deg, transparent 50%, rgba(13,20,16,0.85) 100%);
}
.video-card-title {
    color: var(--white);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.98rem;
}
.play-badge {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 52px; height: 52px;
    border-radius: 50%;
    background: rgba(255,255,255,0.92);
    display: flex; align-items: center; justify-content: center;
    color: var(--green-dark);
    font-size: 1.1rem;
    transition: background .18s, transform .18s;
}
.video-card:hover .play-badge { background: var(--green); color: var(--white); transform: translate(-50%,-50%) scale(1.08); }

.video-grid-empty { color: var(--ink-soft); font-style: italic; }

/* Video modal / lightbox */
.video-modal {
    position: fixed; inset: 0; z-index: 100;
    display: flex; align-items: center; justify-content: center;
}
/* Doit venir après la règle ci-dessus : sans cela le `display:flex` auteur
   écrase le `[hidden]{display:none}` du navigateur et le modal reste visible. */
.video-modal[hidden] { display: none; }
.video-modal-backdrop {
    position: absolute; inset: 0;
    background: rgba(10,16,13,0.88);
}
.video-modal-inner {
    position: relative;
    z-index: 2;
    width: min(90vw, 800px);
}
.video-modal-inner video {
    width: 100%;
    border-radius: var(--radius);
    background: #000;
}
.video-modal-close {
    position: absolute;
    top: -3rem; right: 0;
    background: transparent;
    border: none;
    color: var(--white);
    font-size: 1.4rem;
    cursor: pointer;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
    background: var(--green-darker);
    color: rgba(255,255,255,0.85);
    padding: 3rem 0;
}
.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.6rem;
}
.logo-footer { color: var(--white); }
.logo-footer span { color: #8FE3AC; }
.footer-tag { margin: 0; font-size: 0.92rem; color: rgba(255,255,255,0.65); }
.footer-powered {
    margin: 1.2rem 0 0;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.03em;
    color: rgba(255,255,255,0.55);
}
.footer-powered a {
    color: #8FE3AC;
    text-decoration: none;
    font-weight: 600;
}
.footer-powered a:hover { text-decoration: underline; }