/* Variables CSS para colores y espaciado */
:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --light-gray: #f8fafc;
    --medium-gray: #e2e8f0;
    --dark-gray: #475569;
    --sidebar-width: 250px;
    --header-height: 70px;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--light-gray);
    color: var(--dark-gray);
    line-height: 1.6;
}

/* Estilos para la página de login */
.login-body {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    min-height: 100vh;
}

.login-brand {
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
}

.feature-list {
    max-width: 300px;
}

.feature-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    opacity: 0.9;
}

.login-form-container {
    max-width: 450px;
    width: 100%;
    padding: 2rem;
}

.login-form-container .card {
    border-radius: 16px;
    backdrop-filter: blur(10px);
}

/* Estilos del header */
.navbar {
    background: white;
    border-bottom: 1px solid var(--medium-gray);
    height: var(--header-height);
    box-shadow: var(--box-shadow);
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
    font-size: 1.5rem;
}

/* Estilos del sidebar */
.sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    padding: var(--header-height) 0 0;
    background: white;
    border-right: 1px solid var(--medium-gray);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    width: var(--sidebar-width);
}

.sidebar-sticky {
    position: sticky;
    top: 0;
    height: calc(100vh - var(--header-height));
    overflow-x: hidden;
    overflow-y: auto;
}

.sidebar .nav-link {
    color: var(--dark-gray);
    padding: 0.75rem 1.5rem;
    margin: 0.25rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    text-decoration: none;
    display: flex;
    align-items: center;
    font-weight: 500;
}

.sidebar .nav-link:hover {
    background-color: var(--light-gray);
    color: var(--primary-color);
}

.sidebar .nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

.sidebar .nav-link i {
    margin-right: 0.75rem;
    width: 20px;
    text-align: center;
}

/* Contenido principal */
.main-content {
    margin-left: var(--sidebar-width);
    padding-top: calc(var(--header-height) + 1rem);
    min-height: 100vh;
}

/* Tarjetas resumen */
.summary-card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    height: 120px;
}

.summary-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.summary-card .card-body {
    padding: 1.5rem;
}

.summary-card .icon-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(37, 99, 235, 0.1);
}

.summary-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
}

.summary-card h5 {
    font-size: 0.875rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
}

/* Estilos de tablas */
.table {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.table thead th {
    background-color: var(--light-gray);
    border-bottom: 2px solid var(--medium-gray);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    color: var(--dark-gray);
    padding: 1rem 0.75rem;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background-color: var(--light-gray);
}

.table td {
    padding: 0.75rem;
    vertical-align: middle;
}

/* Estilos de cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 1.5rem;
}

.card-header {
    background-color: white;
    border-bottom: 1px solid var(--medium-gray);
    padding: 1.25rem 1.5rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* Estilos de botones */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-1px);
}

.btn-success {
    background-color: var(--success-color);
}

.btn-danger {
    background-color: var(--danger-color);
}

.btn-warning {
    background-color: var(--warning-color);
}

.btn-info {
    background-color: var(--info-color);
}

/* Estilos de formularios */
.form-control {
    border-radius: var(--border-radius);
    border: 1px solid var(--medium-gray);
    padding: 0.75rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
}

.form-select {
    border-radius: var(--border-radius);
    border: 1px solid var(--medium-gray);
    padding: 0.75rem;
}

.input-group-text {
    background-color: var(--light-gray);
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

/* Badges */
.badge {
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius);
}

/* Alertas */
.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
}

/* Paginación */
.pagination .page-link {
    border-radius: var(--border-radius);
    margin: 0 0.125rem;
    border: 1px solid var(--medium-gray);
    color: var(--dark-gray);
}

.pagination .page-link:hover {
    background-color: var(--light-gray);
    border-color: var(--primary-color);
}

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

/* Estilos responsive */
@media (max-width: 768px) {
    .sidebar {
        margin-left: calc(-1 * var(--sidebar-width));
    }
    
    .sidebar.show {
        margin-left: 0;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .summary-card {
        margin-bottom: 1rem;
    }
    
    .login-form-container {
        padding: 1rem;
    }
}

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Loading states */
.loading {
    position: relative;
    color: transparent !important;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid var(--medium-gray);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Estilos para QR code */
.qr-container {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.qr-code {
    max-width: 300px;
    height: auto;
    margin: 1rem auto;
}

/* Estilos para filtros */
.filters-container {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 1.5rem;
}

/* Utilidades */
.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-info { color: var(--info-color) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-success { background-color: var(--success-color) !important; }
.bg-danger { background-color: var(--danger-color) !important; }
.bg-warning { background-color: var(--warning-color) !important; }
.bg-info { background-color: var(--info-color) !important; }