:root {
    --primary: #4f46e5;
    --primary-dark: #3730a3;
    --bg-main: #f1f5f9;
    --text-main: #1e293b;
    --text-muted: #475569;
    --white: #ffffff;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    margin: 0;
    line-height: 1.5;
}

/* --- HEADER PROFESSIONNEL --- */
header {
    background: var(--white);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .nav-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

header .logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.home-icon {
    font-size: 1.8rem;
    text-decoration: none;
    transition: transform 0.2s;
}

.home-icon:hover { transform: scale(1.1); }

/* --- GRILLE ET CARTES --- */
.main-content {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

.card {
    background: var(--white);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

/* --- TEXTE ET LISIBILITÉ --- */
h1, h2, h3 { color: var(--text-main); font-weight: 800; }

.label-tech {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
}

.value-tech {
    font-size: 1rem;
    font-weight: 800;
    color: var(--text-main);
}

/* --- BOUTONS --- */
.btn {
    background: var(--primary);
    color: var(--white);
    padding: 12px 20px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
}

.btn-secondary {
    background: #f8fafc;
    color: var(--text-main);
    border: 1px solid #cbd5e1;
}

.status-badge {
    padding: 6px 12px;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 800;
}