/* Variables de couleur du site */
:root {
    --primary-blue: #1e40af;
    --secondary-blue: #3b82f6;
    --accent-orange: #f59e0b;
    --success-green: #10b981;
    --secondary-gray: #64748b;
    --light-bg: #f8fafc;
    --dark-bg: #1f2937;
    --text-dark: #1f2937;
    --text-light: #f9fafb;
}

section {
    scroll-margin-top: 160px !important; /* Compense la hauteur du header sticky */
    padding-top: 80px !important; /* Espace supplémentaire pour éviter que le contenu soit collé au header */
}

header {
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    background: white !important;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: bold;
    color: var(--text-dark) !important;
    transition: color 0.3s ease;
}

.navbar-brand:hover {
    color: var(--accent-orange) !important;
}

.navbar-brand img {
    background: transparent !important;
    mix-blend-mode: multiply;
}

.nav-link {
    color: var(--text-dark) !important;
    font-weight: 500;
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    margin: 0 0.125rem;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--accent-orange) !important;
    background-color: rgba(245, 158, 11, 0.1);
    transform: translateY(-1px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 70%;
}

.card {
    border: none;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(30, 64, 175, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-gray) 0%, #94a3b8 100%);
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(100, 116, 139, 0.2);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #475569 0%, var(--secondary-gray) 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(100, 116, 139, 0.3);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-green) 0%, #34d399 100%);
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(16, 185, 129, 0.2);
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669 0%, var(--success-green) 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
    color: white;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

footer {
    margin-top: 50px;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #374151 100%);
    color: #e5e7eb;
}

.testimonial {
    font-style: italic;
}

blockquote {
    border-left: 5px solid #3b82f6;
    padding-left: 20px;
}

.section-bg {
    background-color: #f8fafc;
}

.alert-success {
    background-color: #dcfce7;
    border-color: #bbf7d0;
    color: #166534;
}

.alert-danger {
    background-color: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}