/* ============================================================
   CORPANALYTX - SYSTEME DE DESIGN INDUSTRIEL
   Thème : Luxe Industriel / Pragmatique
   Couleurs : Noir Profond (#0b0b0b) & Taupe Bronze (#C4A484)
   ============================================================ */

:root {
    /* --- PALETTE DE COULEURS --- */
    --bg-body: #0b0b0b;       /* Fond principal : Noir quasi absolu */
    --bg-card: #141414;       /* Fond des blocs : Gris anthracite technique */
    --bg-overlay: rgba(11, 11, 11, 0.95); /* Pour les menus et modales */
    
    --taupe-main: #C4A484;    /* ACCENT : Couleur Bronze/Kraft */
    --taupe-hover: #a38668;   /* Version plus sombre au survol */
    
    --text-white: #ffffff;    /* Titres et éléments forts */
    --text-body: #b3b3b3;     /* Texte courant (gris doux pour éviter la fatigue oculaire) */
    --border-color: #2a2a2a;  /* Bordures subtiles pour structurer l'espace */

    /* --- TYPOGRAPHIE --- */
    --font-titre: 'Playfair Display', serif; /* Apporte le côté "Prestige/Sérieux" */
    --font-corps: 'Inter', sans-serif;       /* Lisibilité technique optimale */
    --font-logo: 'Outfit', sans-serif;       /* Modernité géométrique */
}

/* --- RESET & BASES --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    background-color: var(--bg-body);
    color: var(--text-body);
    font-family: var(--font-corps);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
    display: flex; flex-direction: column; min-height: 100vh;
}

a { text-decoration: none; color: inherit; transition: 0.3s ease; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* --- TYPOGRAPHIE --- */
h1, h2, h3, h4 { font-family: var(--font-titre); color: var(--text-white); font-weight: 400; }

h1 {
    font-size: clamp(2.5rem, 5vw, 4.2rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

h3 { font-size: 1.5rem; color: var(--taupe-main); margin-bottom: 1rem; }
h4 { font-size: 1.1rem; color: var(--text-white); font-weight: 600; font-family: var(--font-corps); text-transform: uppercase; letter-spacing: 1px;}

/* --- UTILITAIRES DE STRUCTURE --- */
.container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; width: 100%; }
.section-padding { padding: 6rem 0; }
.text-center { text-align: center; }
.mb-2 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 4rem; }

/* Badge (L'étiquette technique au dessus des titres) */
.badge {
    display: inline-block;
    font-family: var(--font-corps);
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--taupe-main);
    border: 1px solid var(--taupe-main);
    padding: 6px 14px;
    margin-bottom: 1.5rem;
}

/* --- BOUTONS (Appel à l'action) --- */
.btn {
    display: inline-block;
    padding: 1rem 2.2rem;
    border: 1px solid var(--taupe-main);
    color: var(--taupe-main);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    background: transparent;
}

.btn:hover {
    background: var(--taupe-main);
    color: #000; /* Contraste fort pour la lisibilité */
}

/* Bouton plein par défaut pour l'action principale */
.btn-fill {
    display: inline-block;
    padding: 1rem 2.2rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--taupe-main);
    color: #000;
    border: 1px solid var(--taupe-main);
}

.btn-fill:hover {
    background: transparent;
    color: var(--taupe-main);
}

/* --- NAVIGATION --- */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--bg-overlay);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    z-index: 1000;
    padding: 1.2rem 0;
}

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

.logo {
    font-family: var(--font-logo);
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-white);
    letter-spacing: -0.5px;
}
.logo span { color: var(--taupe-main); }

.nav-links { display: flex; gap: 2rem; }

.nav-links a {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #cccccc;
    position: relative;
}

.nav-links a:hover, .nav-links a.active { color: var(--taupe-main); }
.nav-links a.active::after {
    content: '';
    position: absolute; bottom: -5px; left: 0; width: 100%; height: 1px;
    background: var(--taupe-main);
}

/* --- HEADERS (En-têtes de page) --- */
.page-header {
    height: 50vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-size: cover;
    background-position: center;
    position: relative;
    margin-top: 70px;
}

.page-header::before {
    content: '';
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.5), var(--bg-body));
    z-index: 1;
}

.header-content { position: relative; z-index: 2; max-width: 800px; padding: 0 1rem; }

/* --- GRILLES & CARTES --- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 2rem; }

.card {
    background: var(--bg-card);
    padding: 3rem;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, border-color 0.3s ease;
    height: 100%;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--taupe-main);
}

.card-icon { font-size: 2.5rem; color: var(--taupe-main); margin-bottom: 1.5rem; }

/* --- LISTES ICONES (Checklists) --- */
ul.check-list li {
    display: flex; align-items: flex-start; gap: 15px;
    margin-bottom: 1rem; color: var(--text-body);
}
ul.check-list i { color: var(--taupe-main); margin-top: 5px; flex-shrink: 0; }

/* --- PRIX --- */
.price-tag {
    font-family: var(--font-titre);
    font-size: 2.5rem;
    color: var(--text-white);
    margin: 1.5rem 0;
}
.price-tag span { font-size: 1rem; color: #666; font-family: var(--font-corps); }

/* --- FORMULAIRES --- */
.form-box {
    background: var(--bg-card);
    padding: 3rem;
    border: 1px solid var(--border-color);
    max-width: 800px;
    margin: 0 auto;
}

.form-group { margin-bottom: 1.5rem; }
.form-label { display: block; margin-bottom: 0.5rem; font-size: 0.8rem; color: var(--taupe-main); text-transform: uppercase; letter-spacing: 1px;}

input, select, textarea {
    width: 100%; padding: 1rem;
    background: var(--bg-body);
    border: 1px solid var(--border-color);
    color: var(--text-white);
    font-family: inherit; font-size: 1rem;
}

input:focus, select:focus, textarea:focus {
    outline: none; border-color: var(--taupe-main);
}

/* --- PIED DE PAGE --- */
footer {
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    background: var(--bg-card);
    padding: 4rem 0;
    text-align: center;
    font-size: 0.9rem;
}

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
    .nav-links { display: none; } /* En attendant un menu JS burger si besoin */
    .grid-2 { grid-template-columns: 1fr; }
    h1 { font-size: 2.8rem; }
    .page-header { height: auto; padding: 6rem 0; }
    .section-padding { padding: 4rem 0; }
}