/* Palette de couleurs et overrides globaux */
:root {
    --primary-color: #0d6efd;
    --dark-bg: #0f172a; /* Bleu nuit profond */
}

body {
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    background-color: rgba(15, 23, 42, 0.95) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand span {
    letter-spacing: 0.5px;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    min-height: 80vh;
    padding-top: 80px; /* Espace pour la navbar fixe */
    position: relative;
}

/* Feature Cards */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 12px;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1) !important;
}

.icon-box {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Accordion FAQ */
.accordion-item {
    border: none;
    margin-bottom: 1rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    border-radius: 8px !important;
    overflow: hidden;
}

.accordion-button:not(.collapsed) {
    background-color: #e7f1ff;
    color: #0d6efd;
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: none;
    border-color: rgba(0,0,0,.125);
}

/* Footer Links */
footer a:hover {
    color: #fff !important;
    transition: color 0.2s;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-section {
        min-height: auto;
        padding: 6rem 0;
    }
    .display-4 {
        font-size: 2.5rem;
    }
}