/* styles/theme.css */
:root {
    /* Palette Gauloise */
    --primary-blue: #2c5f7c;
    --primary-blue-dark: #1a3d52;
    --accent-yellow: #f4c430;
    --accent-yellow-dark: #d4a520;
    --success-green: #4a7c59;
    --danger-red: #c84848;
    --neutral-stone: #e8e3d6;
    --text-dark: #2c2c2c;
    --text-light: #ffffff;
    --bg-light: #f9f7f1;

    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;

    /* Bordures */
    --border-radius: 8px;
    --border-radius-lg: 16px;

    /* Ombres */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* --- SECTION HERO --- */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--success-green) 100%);
    color: var(--text-light);
    padding: var(--spacing-xl) 0;
    text-align: center;
    /* Ajout pour compenser la navbar fixe si besoin */
    margin-top: 0; 
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* --- BOUTONS --- */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    font-weight: bold;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background-color: var(--accent-yellow);
    color: var(--primary-blue-dark);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--accent-yellow-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-light);
    border: 2px solid var(--text-light);
}

.btn-secondary:hover {
    background-color: var(--text-light);
    color: var(--primary-blue);
}

/* --- SECTIONS GÉNÉRALES --- */
.section {
    padding: var(--spacing-xl) 0;
}

.section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-blue-dark);
    /* Responsive */
}

/* --- GRILLE DE CARTES --- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.card {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    text-align: center;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.card h3 {
    color: var(--primary-blue-dark);
    margin-bottom: var(--spacing-xs);
}

.card-danger {
    border-left: 5px solid var(--danger-red);
}

/* --- PILIERS --- */
.pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.pillar {
    background: linear-gradient(135deg, var(--success-green), var(--primary-blue));
    color: var(--text-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.pillar:hover {
    transform: scale(1.05);
}

.pillar-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
}

.pillar h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
}

/* --- SECTION PROBLÈME --- */
.problem-section {
    background-color: var(--neutral-stone);
}

/* --- FOOTER --- */
.footer {
    background-color: var(--primary-blue-dark);
    color: var(--text-light);
    padding: var(--spacing-md);
    text-align: center;
}

.footer a {
    color: var(--accent-yellow);
    text-decoration: none;
}

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

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section h2 {
        font-size: 1.8rem;
    }
    /* Le responsive de la Navbar est géré dans son propre fichier CSS désormais */
}