/* ==========================================================================
   Menuiserie — feuille de style v2 « Atelier sombre & doré »
   Thème sombre premium, typographie éditoriale, sections plein écran.
   Mobile-first, sans framework externe.
   ========================================================================== */

:root {
    /* Fond & panneaux */
    --color-bg: #120e0a;
    --color-bg-alt: #1a140e;
    --color-bg-elevated: #1f1912;
    --color-surface-border: rgba(244, 232, 214, 0.1);
    --color-surface-border-strong: rgba(244, 232, 214, 0.18);

    /* Texte */
    --color-text: #f3ece0;
    --color-text-light: #b6a891;
    --color-text-faint: #8a7c68;
    --color-heading: #f8f2e6;

    /* Or / cuivre — accent de la maison */
    --color-primary: #c9a35e;
    --color-primary-dark: #a9843f;
    --color-primary-light: #e0c184;
    --color-accent: #e6c98a;
    --color-on-primary: #1a1309;

    --color-success-bg: rgba(94, 168, 94, 0.14);
    --color-success-text: #8fd08f;
    --color-error-bg: rgba(214, 92, 82, 0.14);
    --color-error-text: #e58a80;

    --font-heading: 'Fraunces', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

    --container-width: 1220px;
    --radius: 6px;
    --radius-sm: 4px;
    --shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6);
    --shadow-sm: 0 12px 28px -12px rgba(0, 0, 0, 0.5);
    --shadow-gold: 0 14px 32px -10px rgba(201, 163, 94, 0.35);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul { padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font: inherit; }

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--color-heading);
    line-height: 1.12;
    font-weight: 600;
    letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.6rem, 7vw, 5rem); font-weight: 600; }
h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); }
h3 { font-size: 1.25rem; font-weight: 600; }

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--color-primary);
    color: var(--color-on-primary);
    padding: 0.75rem 1.25rem;
    z-index: 1000;
    font-weight: 700;
}
.skip-link:focus { left: 0; }

.container {
    width: 100%;
    max-width: var(--container-width);
    margin-inline: auto;
    padding-inline: 1.25rem;
}

/* ---------- Icônes SVG ---------- */
.icon {
    width: 1.2em;
    height: 1.2em;
    flex-shrink: 0;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    vertical-align: -0.2em;
}
.icon-inline {
    width: 0.95em;
    height: 0.95em;
    transition: transform var(--transition);
}

/* ---------- Boutons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.95rem 1.9rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
    border: 1.5px solid transparent;
    white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: var(--color-on-primary);
    box-shadow: var(--shadow-gold);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px -12px rgba(201, 163, 94, 0.5);
}
.btn-primary:active { transform: translateY(-1px); }
.btn-outline {
    border-color: var(--color-surface-border-strong);
    color: var(--color-text);
    background: transparent;
}
.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-light);
    transform: translateY(-3px);
}
.btn-outline:active { transform: translateY(-1px); }
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--color-primary-light);
}
.card-link:hover .icon-inline { transform: translateX(4px); }
.btn-lg { padding: 1.15rem 2.4rem; font-size: 0.92rem; }

/* ---------- En-tête / navigation ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 500;
    padding-block: 1.4rem;
    background: linear-gradient(to bottom, rgba(10, 8, 5, 0.55), transparent);
    transition: background var(--transition), padding var(--transition), box-shadow var(--transition), border-color var(--transition);
    border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
    background: rgba(15, 11, 7, 0.86);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding-block: 0.85rem;
    border-bottom-color: var(--color-surface-border);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}
.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    transition: transform var(--transition);
}
.logo-icon img { width: 100%; height: 100%; object-fit: contain; }
.logo:hover .logo-icon { transform: rotate(-4deg) scale(1.06); }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-name {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: 0.02em;
    color: var(--color-heading);
}
.logo-slogan {
    font-size: 0.68rem;
    color: var(--color-text-faint);
    letter-spacing: 0.03em;
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 0;
    z-index: 501;
}
.nav-toggle-bar {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-principale {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 24%;
    width: 76%;
    height: 100vh;
    height: 100dvh;
    background: #0c0906;
    background-image: radial-gradient(circle at 100% 0%, rgba(201, 163, 94, 0.1), transparent 55%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 500;
    border-left: 1px solid var(--color-surface-border);
}
.nav-principale.is-open { transform: translateX(0); }

.nav-principale ul {
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
    margin-bottom: 2.2rem;
}
.nav-principale a {
    color: var(--color-text);
    font-size: 1.5rem;
    font-family: var(--font-heading);
    font-weight: 500;
    transition: color var(--transition);
}
.nav-principale a.active,
.nav-principale ul a:hover {
    color: var(--color-primary-light);
}
.nav-cta {
    align-self: flex-start;
}


/* ---------- Sections génériques ---------- */
.section { padding-block: clamp(4rem, 8vw, 7.5rem); }
.section-alt { background: var(--color-bg-alt); }

.section-head { max-width: 700px; margin-bottom: 3rem; }
.section-head h2 { margin-top: 0.5rem; }
.section-lead {
    margin-top: 0.85rem;
    color: var(--color-text-light);
    font-size: 1.05rem;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--color-primary-light);
}
.eyebrow::before {
    content: "";
    display: inline-block;
    width: 28px;
    height: 1px;
    background: var(--color-primary);
}

.text-center { text-align: center; margin-top: 2.5rem; }

/* ---------- Grilles ---------- */
.grid { display: grid; gap: 1.75rem; }
.grid-3 { grid-template-columns: repeat(1, 1fr); }
.grid-4 { grid-template-columns: repeat(1, 1fr); }

/* ---------- Cadres image ---------- */
.img-placeholder {
    position: relative;
    background: var(--color-bg-elevated);
    border-radius: var(--radius);
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    aspect-ratio: 4 / 3;
    padding: 1rem;
    overflow: hidden;
    border: 1px solid var(--color-surface-border);
}
.img-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.img-placeholder.map-embed { padding: 0; background: var(--color-bg-elevated); }
.img-placeholder.map-embed iframe {
    width: 100%;
    height: 100%;
    border: 0;
    filter: invert(92%) hue-rotate(180deg) contrast(90%) brightness(96%);
}

.gallery-item, .gallery-card { overflow: hidden; border-radius: var(--radius); }
.gallery-item:hover .img-placeholder img,
.gallery-card:hover .img-placeholder img {
    transform: scale(1.06);
}
.img-placeholder-hero { aspect-ratio: 4 / 3; }
.img-placeholder-square { aspect-ratio: 1 / 1; }
.img-placeholder-wide { aspect-ratio: 16 / 9; margin-top: 1.5rem; }

/* ---------- Hero plein écran (accueil + pages secondaires) ---------- */
.media-hero {
    position: relative;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    color: #fff;
    min-height: 62vh;
}
.media-hero-home { min-height: 100svh; align-items: center; }
.media-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 50%;
}
.media-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    will-change: transform;
}
.media-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        linear-gradient(180deg, rgba(8, 6, 4, 0.65) 0%, rgba(8, 6, 4, 0.15) 32%, rgba(8, 6, 4, 0.55) 68%, rgba(8, 6, 4, 0.92) 100%);
}
.media-hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    padding-block: 9rem 4.5rem;
}
.media-hero-home .media-hero-content { padding-block: 6rem 5rem; }
.media-hero .eyebrow { color: var(--color-accent); }
.media-hero .eyebrow::before { background: var(--color-accent); }
.media-hero h1 { color: #fff; max-width: 16ch; }
.media-hero-lead {
    margin-top: 1.25rem;
    max-width: 46ch;
    color: rgba(255, 255, 255, 0.78);
    font-size: 1.08rem;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}
.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem 1.6rem;
    margin-top: 2.5rem;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 500;
}
.hero-badges li { display: flex; align-items: center; gap: 0.5rem; }
.hero-badges .icon {
    width: 20px;
    height: 20px;
    padding: 3px;
    border-radius: 50%;
    border: 1px solid var(--color-primary);
    color: var(--color-primary-light);
    stroke-width: 2.2;
}

.scroll-cue {
    position: absolute;
    left: 50%;
    bottom: 2.2rem;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}
.scroll-cue .icon { animation: scroll-bounce 2.2s ease-in-out infinite; width: 16px; height: 16px; transform: rotate(180deg); }
@keyframes scroll-bounce {
    0%, 100% { transform: translateY(0); opacity: 0.5; }
    50% { transform: translateY(8px); opacity: 1; }
}

/* ---------- Cards / services ---------- */
.card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius);
    padding: 2rem 1.75rem;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
    border-color: var(--color-surface-border-strong);
}
.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 54px;
    border-radius: 50%;
    border: 1px solid var(--color-surface-border-strong);
    color: var(--color-primary-light);
    margin-bottom: 1.25rem;
    transition: background var(--transition), transform var(--transition), border-color var(--transition);
}
.card-icon .icon { width: 24px; height: 24px; }
.card:hover .card-icon {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-on-primary);
    transform: scale(1.08);
}
.card h3 { margin-bottom: 0.6rem; }
.card p { color: var(--color-text-light); margin-bottom: 0.9rem; }
.card-link { font-weight: 600; font-size: 0.9rem; }

/* ---------- Pourquoi nous choisir ---------- */
.why-us-inner { display: grid; gap: 2.5rem; align-items: center; }
.why-us-inner img { border-radius: var(--radius); }
.feature-list { display: flex; flex-direction: column; gap: 1.5rem; margin-top: 1.5rem; }
.feature-list li { padding-left: 1.5rem; border-left: 1px solid var(--color-surface-border-strong); }
.feature-list strong { display: block; margin-bottom: 0.25rem; color: var(--color-heading); font-family: var(--font-heading); font-size: 1.05rem; font-weight: 600; }
.feature-list p { color: var(--color-text-light); }

/* ---------- Galerie / réalisations (aperçu accueil) ---------- */
.gallery-item { display: block; }
.gallery-item .img-placeholder { aspect-ratio: 4 / 5; }
.realisations-preview .grid-3 > a:first-child .img-placeholder { aspect-ratio: 4 / 5; }
.gallery-caption {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    display: block;
    margin: 0;
    padding: 3rem 1.4rem 1.25rem;
    background: linear-gradient(to top, rgba(10, 8, 5, 0.9), rgba(10, 8, 5, 0.4) 65%, transparent);
    color: #fff;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: padding-bottom var(--transition);
}
.gallery-item:hover .gallery-caption { padding-bottom: 1.65rem; }

/* Grille asymétrique : la première réalisation prend plus de place */
@media (min-width: 768px) {
    .realisations-preview .grid-3 {
        grid-template-columns: 1.4fr 1fr;
        grid-template-rows: repeat(2, 1fr);
    }
    .realisations-preview .grid-3 > a:first-child {
        grid-row: 1 / span 2;
    }
    .realisations-preview .grid-3 > a:first-child .img-placeholder {
        aspect-ratio: auto;
        height: 100%;
    }
}

/* ---------- Témoignages ---------- */
.testimonials-grid { column-count: 1; column-gap: 1.75rem; }
.testimonial {
    position: relative;
    display: block;
    break-inside: avoid;
    margin-bottom: 1.75rem;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius);
    padding: 2rem 1.85rem 1.85rem;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.testimonial::before {
    content: "“";
    display: block;
    font-family: var(--font-heading);
    font-size: 3rem;
    line-height: 1;
    color: var(--color-primary);
    margin-bottom: 0.4rem;
}
.testimonial:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-sm);
    border-color: var(--color-surface-border-strong);
}
.testimonial p { color: var(--color-text-light); margin-bottom: 1.1rem; white-space: pre-line; }
.testimonial footer { font-weight: 600; color: var(--color-primary-light); font-family: var(--font-heading); }

@media (min-width: 600px) { .testimonials-grid { column-count: 2; } }
@media (min-width: 992px) { .testimonials-grid { column-count: 3; } }

/* ---------- Bandeau CTA ---------- */
.cta-banner {
    position: relative;
    background: linear-gradient(120deg, var(--color-bg-alt), #241a0f);
    color: #fff;
    padding-block: 4.5rem;
    border-top: 1px solid var(--color-surface-border);
    overflow: hidden;
}
.cta-banner::before {
    content: "";
    position: absolute;
    width: 480px; height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(201, 163, 94, 0.18), transparent 70%);
    right: -160px; top: -220px;
    pointer-events: none;
}
.cta-banner h2 { color: #fff; }
.cta-banner p { color: var(--color-text-light); margin-top: 0.5rem; }
.cta-banner-inner {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    align-items: flex-start;
}

/* ---------- Détail de service ---------- */
.service-detail-inner { display: grid; gap: 3rem; align-items: center; }
.service-num {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    display: block;
}
.service-detail-text h2 { margin-block: 0 0.9rem; }
.service-detail-text p { color: var(--color-text-light); margin-bottom: 1.25rem; font-size: 1.02rem; }
.check-list { margin-bottom: 1.75rem; display: flex; flex-direction: column; gap: 0.7rem; }
.check-list li { display: flex; align-items: center; gap: 0.7rem; color: var(--color-text-light); }
.check-list .icon {
    width: 20px; height: 20px; padding: 3px;
    border-radius: 50%;
    border: 1px solid var(--color-surface-border-strong);
    color: var(--color-primary-light);
    stroke-width: 2.2;
    flex-shrink: 0;
}

/* ---------- Processus ---------- */
.process-step { text-align: center; }
.process-number {
    width: 56px; height: 56px;
    border-radius: 50%;
    border: 1px solid var(--color-primary);
    color: var(--color-primary-light);
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0 auto 1.25rem;
}
.process-step h3 { margin-bottom: 0.5rem; }
.process-step p { color: var(--color-text-light); font-size: 0.95rem; }

/* ---------- Galerie filtrable (page réalisations) ---------- */
.gallery-filters { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 3rem; }
.filter-btn {
    padding: 0.6rem 1.35rem;
    border-radius: 999px;
    border: 1px solid var(--color-surface-border-strong);
    background: transparent;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-text-light);
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.filter-btn:hover { border-color: var(--color-primary); color: var(--color-primary-light); }
.filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-on-primary);
}
.gallery-card {
    border: 1px solid var(--color-surface-border);
    background: var(--color-bg-elevated);
    transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition-slow), border-color var(--transition);
}
.gallery-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    border-color: var(--color-surface-border-strong);
}
.gallery-card .img-placeholder { border-radius: 0; border: 0; border-bottom: 1px solid var(--color-surface-border); }
.gallery-item:not(.gallery-card) .img-placeholder { border-radius: 0; border: 0; }
#gallery-grid .gallery-card.is-filtered-out { opacity: 0; pointer-events: none; }
.gallery-card-info { padding: 1.15rem 1.25rem; }
.gallery-tag {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-weight: 700;
    color: var(--color-primary-light);
}
.gallery-card-info h3 { margin-block: 0.4rem 0.2rem; font-size: 1.1rem; }
.gallery-card-info p { color: var(--color-text-light); font-size: 0.9rem; }
.gallery-empty { text-align: center; color: var(--color-text-light); padding-block: 2rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; gap: 3rem; }
.contact-info-list { display: flex; flex-direction: column; gap: 1.4rem; margin-block: 1.75rem; }
.contact-info-list li { display: flex; gap: 1rem; align-items: flex-start; }
.contact-icon {
    display: flex; align-items: center; justify-content: center;
    width: 42px; height: 42px; flex-shrink: 0;
    border-radius: 50%;
    border: 1px solid var(--color-surface-border-strong);
    color: var(--color-primary-light);
}
.contact-icon .icon { width: 18px; height: 18px; }
.contact-info-list strong { color: var(--color-heading); font-family: var(--font-heading); font-weight: 600; }
.contact-info-list p { color: var(--color-text-light); }
.contact-info-list a { color: var(--color-primary-light); font-weight: 600; }

.contact-form-wrapper {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius);
    padding: 2.25rem;
}
.contact-form-wrapper h2 { margin-bottom: 1.5rem; }

.honeypot-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-row { display: grid; gap: 1.25rem; grid-template-columns: 1fr; margin-bottom: 1.25rem; }
.form-group { margin-bottom: 1.25rem; display: flex; flex-direction: column; gap: 0.5rem; }
.form-row .form-group { margin-bottom: 0; }
.form-group label { font-weight: 600; font-size: 0.88rem; color: var(--color-text); }
.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.8rem 0.95rem;
    border: 1px solid var(--color-surface-border-strong);
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.2);
    color: var(--color-text);
    width: 100%;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group select { color-scheme: dark; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--color-text-faint); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(201, 163, 94, 0.18);
}
.form-group textarea { resize: vertical; min-height: 140px; }
.input-error { border-color: var(--color-error-text) !important; }
.field-error { color: var(--color-error-text); font-size: 0.85rem; }
.required { color: var(--color-error-text); }

.form-group-checkbox { flex-direction: row; align-items: flex-start; gap: 0.6rem; }
.form-group-checkbox input { width: auto; margin-top: 0.25rem; accent-color: var(--color-primary); }
.form-group-checkbox label { font-weight: 400; font-size: 0.88rem; color: var(--color-text-light); }

.form-note { font-size: 0.82rem; color: var(--color-text-faint); margin-top: 1rem; }

.alert { padding: 1rem 1.25rem; border-radius: var(--radius-sm); margin-bottom: 1.5rem; font-weight: 600; font-size: 0.92rem; }
.alert-success { background: var(--color-success-bg); color: var(--color-success-text); }
.alert-error { background: var(--color-error-bg); color: var(--color-error-text); }

/* ---------- Pied de page ---------- */
.site-footer { background: #0b0805; color: var(--color-text-light); border-top: 1px solid var(--color-surface-border); }
.footer-grid { display: grid; gap: 2.75rem; padding-block: 4rem; grid-template-columns: 1fr; }
.footer-col h3 { color: var(--color-heading); font-family: var(--font-heading); font-size: 1.02rem; margin-bottom: 1.1rem; font-weight: 600; }
.footer-about p { margin-block: 1.1rem; font-size: 0.92rem; }
.logo-footer .logo-name { color: var(--color-heading); }
.logo-footer .logo-slogan { color: var(--color-text-faint); }
.footer-social { display: flex; gap: 0.75rem; }
.footer-social a {
    width: 40px; height: 40px;
    border-radius: 50%;
    border: 1px solid var(--color-surface-border-strong);
    display: flex; align-items: center; justify-content: center;
    color: var(--color-text-light);
    transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}
.footer-social a .icon { width: 17px; height: 17px; }
.footer-social a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-on-primary);
    transform: translateY(-3px);
}
.footer-links, .footer-contact { display: flex; flex-direction: column; gap: 0.8rem; font-size: 0.92rem; }
.footer-links a { transition: color var(--transition); }
.footer-links a:hover, .footer-contact a:hover { color: var(--color-primary-light); }
.footer-contact li { display: flex; align-items: flex-start; gap: 0.75rem; }
.footer-contact .icon { width: 17px; height: 17px; margin-top: 0.2rem; color: var(--color-primary); flex-shrink: 0; }

.footer-bottom { border-top: 1px solid var(--color-surface-border); }
.footer-bottom-inner { display: flex; flex-direction: column; gap: 0.5rem; padding-block: 1.5rem; font-size: 0.78rem; color: var(--color-text-faint); }
.footer-legal a:hover { color: var(--color-primary-light); }

/* ---------- Retour en haut ---------- */
.back-to-top {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    width: 48px; height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: var(--color-on-primary);
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-gold);
    opacity: 0; visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    z-index: 400;
}
.back-to-top .icon { width: 20px; height: 20px; }
.back-to-top:hover { transform: translateY(-4px); }
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- Apparition au défilement ----------
   L'état "masqué" n'est activé que si le JavaScript a pu s'exécuter
   (classe .js-anim posée sur <html>). Sans JS, tout le contenu reste
   visible par défaut : l'animation est un bonus, jamais une condition
   d'accès au contenu. */
.reveal {
    transition: opacity var(--transition-slow), transform var(--transition-slow), filter var(--transition-slow);
}
.reveal-stagger > * {
    transition: opacity 0.55s ease-out, transform 0.55s ease-out, filter 0.55s ease-out;
}
html.js-anim .reveal {
    opacity: 0;
    transform: translateY(36px);
    filter: blur(6px);
}
html.js-anim .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}
html.js-anim .reveal-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    filter: blur(3px);
}
html.js-anim .reveal-stagger.is-visible > * {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}
.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0.03s; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 0.07s; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 0.11s; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 0.15s; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 0.19s; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 0.23s; }
.reveal-stagger.is-visible > *:nth-child(7) { transition-delay: 0.27s; }
.reveal-stagger.is-visible > *:nth-child(8) { transition-delay: 0.31s; }
.reveal-stagger.is-visible > *:nth-child(9) { transition-delay: 0.35s; }

/* ==========================================================================
   Media queries — mobile-first responsive breakpoints
   ========================================================================== */

/* Tablettes (≥600px) */
@media (min-width: 600px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr 1fr; }
    .cta-banner-inner { flex-direction: row; align-items: center; justify-content: space-between; }
}

/* Tablettes larges / petits écrans (≥768px) */
@media (min-width: 768px) {
    .why-us-inner { grid-template-columns: 0.9fr 1.1fr; }
    .service-detail-inner { grid-template-columns: 1fr 1fr; }
    .contact-grid { grid-template-columns: 0.9fr 1.1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-bottom-inner { flex-direction: row; align-items: center; justify-content: space-between; }
    .media-hero-content { padding-block: 10rem 5.5rem; }
}

/* Ordinateurs de bureau (≥992px) */
@media (min-width: 992px) {
    .container { padding-inline: 2rem; }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }

    .nav-toggle { display: none; }

    .nav-principale {
        position: static;
        width: auto; height: auto;
        background: transparent;
        background-image: none;
        flex-direction: row;
        align-items: center;
        gap: 2.25rem;
        padding: 0;
        overflow-y: visible;
        transform: none;
        top: auto; right: auto; bottom: auto; left: auto;
        border-left: 0;
    }
    .nav-principale ul { flex-direction: row; align-items: center; gap: 2rem; margin-bottom: 0; }
    .nav-principale a {
        color: rgba(255, 255, 255, 0.85);
        font-size: 0.88rem;
        font-family: var(--font-body);
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        padding-bottom: 12px;
        position: relative;
    }
    .nav-principale a::after {
        content: "";
        position: absolute;
        left: 0; bottom: -4px;
        width: 0;
        height: 1px;
        background: var(--color-primary);
        transition: width var(--transition);
    }
    .nav-principale a:hover::after,
    .nav-principale a.active::after { width: 100%; }
    .nav-principale a.active { color: var(--color-primary-light); }
    .nav-cta { align-self: center; }

    .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 2.5rem; }
    .footer-about { max-width: 320px; }
}

/* Grands écrans (≥1200px) */
@media (min-width: 1200px) {
    .media-hero-content { padding-block: 11rem 6rem; }
}