:root {
    --bni-primary: #d12630;    /* Rojo BNI del logo */
    --bni-secondary: #5d6167;  /* Gris MIND del logo */
    --bni-success: #28a745;    /* Verde para estados completados */
    --bni-info: #17a2b8;       /* Azul para estados informativos */
    --bni-dark: #333333;       /* Gris oscuro para textos */
    --bni-light: #f8f9fa;      /* Gris claro para fondos */
}

body {
    font-family: 'Poppins', 'Helvetica Neue', sans-serif;
    background-color: var(--bni-light);
    color: var(--bni-dark);
}

/* Animaciones y transiciones */
.hover-card {
    transition: transform 0.3s, box-shadow 0.3s;
}

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

/* Estilos para las fotos en escala de grises */
.card-img-top.pending {
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all 0.5s;
}

.card-img-top.completed {
    filter: grayscale(0%);
    opacity: 1;
}

/* Personalizaci¨Žn de componentes de Bootstrap */
.btn-primary {
    background-color: var(--bni-primary);
    border-color: var(--bni-primary);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: #b8222b;
    border-color: #b8222b;
}

.btn-secondary {
    background-color: var(--bni-secondary);
    border-color: var(--bni-secondary);
}

.btn-secondary:hover, .btn-secondary:focus {
    background-color: #4a4e54;
    border-color: #4a4e54;
}

.bg-primary {
    background-color: var(--bni-primary) !important;
}

.text-primary {
    color: var(--bni-primary) !important;
}

.border-primary {
    border-color: var(--bni-primary) !important;
}

.btn-outline-primary {
    color: var(--bni-primary);
    border-color: var(--bni-primary);
}

.btn-outline-primary:hover, .btn-outline-primary:focus {
    background-color: var(--bni-primary);
    color: white;
}

/* Estilos para la navegaci¨Žn */
.navbar {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-dark {
    background-color: var(--bni-primary) !important;
}

.nav-tabs .nav-link.active {
    color: var(--bni-primary);
    border-color: #dee2e6 #dee2e6 #fff;
    font-weight: 500;
}

.nav-tabs .nav-link:hover:not(.active) {
    border-color: #e9ecef #e9ecef #dee2e6;
    color: var(--bni-secondary);
}

/* Estilos para secciones */
.section-heading {
    position: relative;
    padding-bottom: 10px;
    margin-bottom: 25px;
    color: var(--bni-dark);
}

.section-heading:after {
    content: '';
    width: 70px;
    height: 3px;
    background-color: var(--bni-primary);
    position: absolute;
    bottom: 0;
    left: 0;
}

/* Tarjetas para miembros */
.member-card {
    border-radius: 12px;
    overflow: hidden;
}

.member-card .card-img-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 50%);
}

.sphere-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    border-radius: 50px;
    padding: 5px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Estilo para alertas y mensajes */
.custom-alert {
    border-radius: 8px;
    border-left: 4px solid var(--bni-primary);
}

/* Formularios */
.form-control:focus {
    border-color: var(--bni-primary);
    box-shadow: 0 0 0 0.25rem rgba(209, 38, 48, 0.25);
}

.form-label {
    font-weight: 500;
}

/* Login y registro */
.auth-card {
    max-width: 450px;
    margin: 40px auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.auth-card .card-header {
    border-radius: 15px 15px 0 0;
    background-color: var(--bni-primary);
    color: white;
    padding: 20px;
}

/* Dashboard */
.stat-card {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.stat-card .card-body {
    padding: 20px;
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    opacity: 0.6;
}

/* Tablas */
.table-striped > tbody > tr:nth-of-type(odd) {
    background-color: rgba(209, 38, 48, 0.05);
}

.table th {
    font-weight: 600;
}

.table-dark {
    background-color: var(--bni-secondary);
}

/* Paginaci¨Žn */
.page-link {
    color: var(--bni-primary);
}

.page-item.active .page-link {
    background-color: var(--bni-primary);
    border-color: var(--bni-primary);
}

/* Modales */
.modal-header {
    background-color: var(--bni-primary);
    color: white;
}

/* Progress bars */
.progress-bar {
    background-color: var(--bni-primary);
}

/* Responsive tweaks */
@media (max-width: 768px) {
    .card-title {
        font-size: 1rem;
    }
    
    .btn-sm {
        padding: 0.2rem 0.4rem;
        font-size: 0.75rem;
    }
    
    .navbar-brand span {
        display: none;
    }
    
    .section-heading {
        font-size: 1.5rem;
    }
}