/* ==========================================================================
   PURPOSE. — DESIGN SYSTEM & STYLES (v4.0.5 - Image Master Version)
   ========================================================================== */

/* --- VARIABLES GLOBALES --- */
:root {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --text-primary: #111111;
    --text-secondary: #555555;
    --border-color: #EAEAEA;
    --accent-color: #111111;
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    --header-height-desktop: 80px;
    --header-height-mobile: 65px;

    /* --- RÈGLES DES TAILLES DE TYPOGRAPHIES VALIDÉES --- */
    --size-h1-desktop: 28px;
    --size-h1-mobile: 22px;
    --size-h2-desktop: 18px;
    --size-h2-mobile: 16px;
    --size-h3-desktop: 24px;
    --size-h3-mobile: 20px;
    --size-body-desktop: 13px;
    --size-body-mobile: 13px;
    --size-tagline-desktop: 15px;
    --size-tagline-mobile: 13px;
    --size-btn-desktop: 13px;
    --size-btn-mobile: 13px;
}

/* --- RESET & BASES --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- LE POINT CARRÉ (SIGNATURE DE MARQUE) --- */
.dot {
    display: inline-block;
    width: 0.25em;
    height: 0.25em;
    background-color: currentColor;
    vertical-align: baseline;
    position: relative;
    bottom: 0.02em;
    margin-left: 0.05em;
}

/* --- CONTAINER --- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
}

/* --- EN-TÊTE DE PAGE (HEADER & NAVIGATION) --- */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height-desktop);
    background-color: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-primary);
    text-decoration: none;
    text-transform: uppercase;
}

#nav-menu ul {
    display: flex;
    list-style: none;
    gap: 28px;
    align-items: center;
}

.nav-link {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    white-space: nowrap;
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--text-secondary);
}

/* Bouton Contact dans le Menu */
.contact-btn {
    padding: 8px 18px;
    border: 1px solid var(--text-primary);
    border-radius: 0;
    font-size: 13px;
    font-weight: 500;
}

.contact-btn:hover {
    background-color: var(--text-primary);
    color: #FFFFFF !important;
}

/* Menu Mobile Hamburger (iPhone & Smartphones) */
#menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
    min-height: 44px;
    min-width: 44px;
}

#menu-toggle .bar {
    display: block;
    width: 22px;
    height: 2px;
    margin: 5px 0;
    background-color: var(--text-primary);
    transition: var(--transition-smooth);
}

@media (max-width: 768px) {
    #main-header {
        height: var(--header-height-mobile);
    }

    #menu-toggle {
        display: block;
    }

    #nav-menu {
        position: fixed;
        top: var(--header-height-mobile);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height-mobile));
        background-color: #FFFFFF;
        padding: 40px 24px;
        display: flex;
        flex-direction: column;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 999;
    }

    #nav-menu.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    #nav-menu ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
    }

    .nav-link {
        font-size: 18px;
        font-weight: 600;
    }

    .contact-btn {
        margin-top: 10px;
        width: 100%;
        text-align: center;
        padding: 12px 20px;
    }
}

/* --- HERO SECTION --- */
main {
    padding-top: calc(var(--header-height-desktop) + 40px);
    padding-bottom: 60px;
}

@media (max-width: 768px) {
    main {
        padding-top: calc(var(--header-height-mobile) + 24px);
        padding-bottom: 90px;
    }
}

.hero-title, h1 {
    font-family: var(--font-heading);
    font-size: var(--size-h1-desktop) !important;
    font-weight: 700 !important;
    letter-spacing: 2px !important;
    text-transform: uppercase !important;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.25;
}

.hero-tagline {
    font-family: var(--font-body);
    font-size: var(--size-tagline-desktop) !important;
    font-weight: 400 !important;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    margin-bottom: 36px;
    line-height: 1.5;
}

@media (max-width: 480px) {
    .hero-title, h1 {
        font-size: var(--size-h1-mobile) !important;
        letter-spacing: 1px !important;
        margin-bottom: 8px;
    }
    .hero-tagline {
        font-size: var(--size-tagline-mobile) !important;
        margin-bottom: 24px;
    }
}

/* --- GRILLE DES 4 PILIERS --- */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    align-items: stretch;
}

@media (max-width: 1024px) {
    .pillars-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 600px) {
    .pillars-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* CARTE PILIER */
.pillar-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 20px 18px 0 18px;
    transition: var(--transition-smooth);
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    min-height: 100%;
    touch-action: manipulation;
}

.pillar-card:active {
    background-color: var(--bg-secondary);
}

.pillar-card:hover {
    border-color: var(--text-primary);
}

.pillar-card-body {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.pillar-header h2, h2 {
    font-family: var(--font-heading);
    font-size: var(--size-h2-desktop) !important;
    font-weight: 700 !important;
    letter-spacing: 0.5px;
    margin-bottom: 14px;
    color: var(--text-primary);
}

@media (max-width: 480px) {
    .pillar-header h2, h2 {
        font-size: var(--size-h2-mobile) !important;
    }
}

.pillar-list {
    list-style: none;
    margin-bottom: 20px;
    flex-grow: 1;
}

.pillar-list li, p, li {
    font-family: var(--font-body);
    font-size: var(--size-body-desktop) !important;
    color: var(--text-secondary);
    line-height: 1.5;
}

.pillar-list li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 14px;
}

.pillar-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--text-primary);
}

.pillar-btn-wrapper {
    margin-top: auto;
    padding-bottom: 16px;
}

.submit-btn {
    display: inline-block;
    padding: 12px 20px;
    border: 1px solid var(--text-primary);
    background-color: var(--text-primary);
    color: #FFFFFF !important;
    font-family: var(--font-body) !important;
    font-size: var(--size-btn-desktop) !important;
    font-weight: 500 !important;
    text-decoration: none;
    text-align: center;
    transition: var(--transition-smooth);
    cursor: pointer;
    min-height: 44px;
    line-height: 20px;
}

.submit-btn:hover, .submit-btn:active {
    background-color: #333333;
    border-color: #333333;
}

/* ==========================================================================
   RÈGLES OFFICIELLES POUR LES IMAGES ET VISUELS (FORMAT CARRÉ & ZOOM SUBTIL)
   ========================================================================== */
.pillar-image-box {
    margin: 0 -18px 0 -18px;
    border-top: 1px solid var(--border-color);
    overflow: hidden;
    aspect-ratio: 1 / 1; /* Format Carré 1:1 Généreux */
    width: calc(100% + 36px);
    background-color: var(--bg-secondary);
}

.pillar-image-box img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Recadrage HD net sans déformation */
    display: block;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

/* Zoom léger 1.03x au survol sans décalage de grille */
.pillar-card:hover .pillar-image-box img {
    transform: scale(1.03);
}

/* --- BOUTON DE CALL TO ACTION FLOTTANT SUR IPHONE --- */
.mobile-floating-cta {
    display: none;
}

@media (max-width: 768px) {
    .mobile-floating-cta {
        display: block;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        padding: 12px 16px;
        background-color: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-top: 1px solid var(--border-color);
        box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
        z-index: 9999;
    }
    
    .mobile-cta-btn {
        display: block;
        width: 100%;
        text-align: center;
        padding: 14px 20px;
        font-size: 14px !important;
        font-weight: 600 !important;
        background-color: var(--text-primary);
        color: #FFFFFF !important;
        text-decoration: none;
        letter-spacing: 0.5px;
    }
    
    body {
        padding-bottom: 75px;
    }
}

/* --- TITRES H3 SECTION CONTACT & SUBPAGES --- */
.section-title, h3 {
    font-family: var(--font-heading);
    font-size: var(--size-h3-desktop) !important;
    font-weight: 700 !important;
    color: var(--text-primary);
    margin-bottom: 12px;
}

@media (max-width: 480px) {
    .section-title, h3 {
        font-size: var(--size-h3-mobile) !important;
    }
}

.subtitle {
    font-family: var(--font-heading);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 8px;
}

/* --- PIED DE PAGE (FOOTER) --- */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    margin-top: 40px;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1.5px;
}

.footer-tagline {
    font-size: 13px !important;
    color: var(--text-secondary);
    margin-top: 4px;
}

.footer-right p {
    font-size: 13px !important;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.footer-right a {
    color: var(--text-primary);
    text-decoration: none;
}

.footer-right a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    .footer-container {
        flex-direction: column;
        gap: 16px;
    }
}


/* ==========================================================================
   v4.1 — OFFRES (Clé en main / Pilotage de projet) + GRILLE PAGES PRODUITS
   ========================================================================== */

/* Grille texte | image des pages produits (classe utilisée mais jamais définie jusqu'en v4.0) */
.subpage-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: start; margin-top: 36px; }
@media (max-width: 900px) { .subpage-grid { grid-template-columns: 1fr; gap: 32px; } }

/* Accueil : section « Deux façons de travailler » */
.offers-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 980px; margin: 0 auto; }
.offer-card { display: flex; flex-direction: column; gap: 12px; padding: 30px 30px 28px; background: var(--bg-secondary);
    border: 1px solid var(--border-color); border-radius: 4px; text-decoration: none; color: var(--text-primary); transition: var(--transition-smooth); }
.offer-card:hover { border-color: var(--text-primary); transform: translateY(-2px); }
.offer-card-kicker { font-size: 11px; font-weight: 600; letter-spacing: 1.2px; text-transform: uppercase; color: var(--text-secondary); }
.offer-card h2 { font-family: var(--font-heading); font-size: 24px; font-weight: 700; }
.offer-card p { font-size: 15px; font-weight: 300; color: var(--text-secondary); line-height: 1.7; flex: 1; }
.offer-card .submit-btn { align-self: flex-start; }
@media (max-width: 768px) { .offers-grid { grid-template-columns: 1fr; } .offer-card { padding: 24px 20px; } }

/* Renvoi vers le pilotage en bas des pages produits */
.offer-crossbar { margin-top: 60px; padding: 22px 26px; background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 4px;
    display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.offer-crossbar p { font-size: 15px; font-weight: 300; color: var(--text-secondary); line-height: 1.7; margin: 0; }
.offer-crossbar a, .offer-more { font-size: 13px; font-weight: 600; letter-spacing: 0.8px; text-transform: uppercase; color: var(--text-primary);
    text-decoration: none; border-bottom: 1px solid var(--text-primary); }

/* Bloc « Matériaux et techniques » (ex-texte masqué du pied de page) */
.materials-block { margin-top: 60px; padding-top: 36px; border-top: 1px solid var(--border-color); }
.materials-block h3 { font-family: var(--font-heading); font-size: 18px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 14px; }
.materials-block p { font-size: 15px; font-weight: 300; color: var(--text-secondary); line-height: 1.8; margin-top: 8px; }
.materials-block p strong { font-weight: 500; color: var(--text-primary); }

/* Zone d'intervention visible dans le pied de page */
.footer-zone { margin-top: 10px; font-size: 13px; font-weight: 300; color: var(--text-secondary); line-height: 1.6; }