/* ── CONFIGURATION GÉNÉRALE ── */
*, *::before, *::after { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
}

:root {
    --orange: #F97316;
    --bg: #000000;
    --white: #ffffff;
    --muted: rgba(255,255,255,0.45);
    --font: 'Oswald', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --nav-h: 88px;
    --card-w: 520px;
}

html, body {
    min-height: 100%;
    background-color: var(--bg);
    color: var(--white);
    font-family: var(--font-body);
    overflow-x: hidden;
}

a, button { cursor: pointer; text-decoration: none; }

/* ── SHADER CANVAS (FOND FIXE) ── */
#bg-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    display: block;
}

.no-webgl body {
    background: radial-gradient(ellipse at 60% 40%, #3a1400 0%, #1a0800 40%, #000 100%) fixed;
}

/* ── ZONE CENTRALE ── */
.main-content {
    position: relative;
    z-index: 10;
    display: flex;
    justify-content: center;
    /* align-items: center; */ /* Supprimé pour laisser le contenu s'aligner naturellement */
    padding: calc(var(--nav-h) + 40px) 1.5rem 100px; /* Garde le padding bas pour l'espacement après le formulaire */
}

/* ── CARD PRINCIPALE ── */
.contact-card {
    width: min(var(--card-w), 100%);
    display: flex;
    flex-direction: column;
    opacity: 1; /* Géré par GSAP si besoin */
}

/* Bandeau eyebrow */
.card-eyebrow {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.eyebrow-tag {
    font-family: var(--font);
    font-size: 10px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--orange);
    white-space: nowrap;
}

.eyebrow-line {
    flex: 1;
    height: 1px;
    background: rgba(255,255,255,0.2);
}

/* ── FORM BOX (GLASSMORPHISM) ── */
.form-box {
    width: 100%;
    background: rgba(4, 2, 1, 0.75);
    border: 1px solid rgba(249, 115, 22, 0.2);
    padding: 50px;
    backdrop-filter: blur(20px) saturate(1.5);
    -webkit-backdrop-filter: blur(20px) saturate(1.5);
    position: relative;
    overflow: hidden;
    border-radius: 4px;
}

/* Trait orange vertical signature */
.form-box::before {
    content: '';
    position: absolute;
    left: 0; top: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(to bottom, transparent, var(--orange), transparent);
}

.label-tag {
    font-family: var(--font);
    font-size: 9px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--orange);
    margin-bottom: 15px;
    display: block;
}

.form-box h2 {
    font-family: var(--font);
    font-weight: 900;
    font-size: clamp(2rem, 5vw, 2.8rem);
    line-height: 1.1;
    text-transform: uppercase;
}

.form-box h2 em {
    font-style: italic;
    color: var(--orange);
}

.divider-line {
    width: 40px;
    height: 2px;
    background: var(--orange);
    margin: 20px 0;
}

.contact-sub {
    font-family: var(--font);
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 35px;
}

/* ── FORMULAIRE ── */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-form input,
.contact-form textarea {
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    color: var(--white);
    font-family: var(--font);
    font-size: 1rem;
    padding: 12px 0;
    outline: none;
    transition: border-color 0.3s;
    text-transform: uppercase;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-bottom-color: var(--orange);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: rgba(255,255,255,0.2);
    font-size: 0.85rem;
}

.contact-form button {
    align-self: flex-start;
    margin-top: 10px;
    background: var(--orange);
    color: #000;
    border: none;
    padding: 16px 45px;
    font-family: var(--font);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.3s ease;
}

.contact-form button:hover {
    background: var(--white);
    transform: translateX(5px);
    box-shadow: -6px 0 0 0 var(--orange);
}

/* ── RESPONSIVE ── */

/* Tablette & iPad Air (< 1024px) */
@media (max-width: 1024px) {
    :root { --card-w: 500px; }
    
    .main-content { padding-top: 120px; }
    
    .form-box {
        padding: 40px;
        background: rgba(4, 2, 1, 0.85); /* Plus opaque sur tablette pour la lecture */
    }
}

/* Smartphone (< 600px) */
@media (max-width: 600px) {
    .main-content {
        padding: 100px 1rem 60px;
        align-items: flex-start; /* Permet le scroll naturel si petit écran */
    }

    .form-box {
        padding: 30px 20px;
    }

    .form-box h2 {
        font-size: 1.8rem;
    }

    .contact-form button {
        width: 100%; /* Bouton plein écran sur mobile */
        text-align: center;
    }
}

/* Accessibilité */
@media (prefers-reduced-motion: reduce) {
    #bg-canvas { display: none; }
    body { background: #000; }
}