/* Style personnalisé pour l'application d'analyse de survie */

:root {
    --primary-color: #0d6efd;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f8f9fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    flex: 1;
}

/* Navigation */
.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
}

.nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link:hover {
    transform: translateY(-2px);
}

/* Cards */
.card {
    border: none;
    border-radius: 12px;
    overflow: hidden;
}

.card-header {
    border-bottom: none;
    padding: 1.5rem;
}

.card-body {
    padding: 2rem;
}

/* Form Elements */
.form-control:focus,
.form-check-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-label {
    font-weight: 600;
    color: #495057;
}

.btn {
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
}

/* Sections */
.section {
    display: none;
}

.section.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Alert Boxes */
.alert {
    border: none;
    border-radius: 8px;
}

.alert i {
    font-size: 1.2rem;
    vertical-align: middle;
}

/* Summary Stats Cards */
.stat-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: #212529;
    margin: 0;
}

.stat-card .stat-label {
    color: #6c757d;
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Images */
img.img-fluid {
    max-width: 100%;
    height: auto;
}

img.rounded {
    border-radius: 8px !important;
}

img.shadow-sm {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
}

/* Table */
.table {
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

.table thead {
    background-color: #f8f9fa;
}

.table tbody tr {
    transition: all 0.2s ease;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
    transform: scale(1.01);
}

/* Badges */
.badge {
    padding: 0.5rem 1rem;
    font-weight: 500;
    border-radius: 6px;
}

/* Progress Bar */
.progress {
    height: 24px;
    border-radius: 12px;
    background-color: #e9ecef;
}

.progress-bar {
    font-weight: 500;
}

/* Loading Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Footer */
footer {
    margin-top: auto;
    border-top: 1px solid #dee2e6;
}

/* Responsive */
@media (max-width: 768px) {
    .card-body {
        padding: 1.5rem;
    }

    .stat-card .stat-value {
        font-size: 1.5rem;
    }

    .stat-card .stat-icon {
        font-size: 2rem;
    }

    .btn-lg {
        padding: 0.6rem 1.5rem;
        font-size: 1rem;
    }
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-slide-in {
    animation: slideIn 0.5s ease;
}

/* Utility Classes */
.shadow {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1) !important;
}

.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}