/* Paleta de Colores Mejorada - ISTAE */

:root {
    /* Colores principales */
    --primary-blue: #1E40AF;      /* Azul Institucional - Headers, Navegación */
    --secondary-blue: #3B82F6;    /* Azul Medio - Botones, Enlaces */
    --light-blue: #DBEAFE;        /* Azul Muy Claro - Fondos sutiles */
    --white: #FFFFFF;             /* Blanco Puro - Fondos principales */
    --light-gray: #F8FAFC;        /* Gris Muy Claro - Fondos alternativos */
    --medium-gray: #E2E8F0;       /* Gris Medio - Bordes, Separadores */
    --dark-gray: #64748B;         /* Gris Oscuro - Texto secundario */
    --text-dark: #1E293B;         /* Texto Principal - Excelente contraste */
    --text-light: #FFFFFF;        /* Texto Claro - Sobre fondos oscuros */
    
    /* Colores de estado */
    --success-green: #059669;     /* Verde - Éxito, Estados positivos */
    --warning-yellow: #D97706;    /* Amarillo - Advertencias */
    --danger-red: #DC2626;        /* Rojo - Errores, Alertas */
    --info-blue: #0EA5E9;         /* Azul Info - Información */
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* Bordes redondeados */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-dark);
    background-color: var(--light-gray);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* Headers y Navegación */
.navbar, .header, .top-nav {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #1E3A8A 100%) !important;
    color: var(--text-light) !important;
    box-shadow: var(--shadow-md);
    border: none !important;
}

.navbar-brand, .navbar-nav .nav-link {
    color: var(--text-light) !important;
    font-weight: 500;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--light-blue) !important;
    transform: translateY(-1px);
}

/* Sidebar y Menú lateral */
.sidebar, .aside {
    background: linear-gradient(180deg, var(--primary-blue) 0%, #1E3A8A 100%) !important;
    color: var(--text-light) !important;
    box-shadow: var(--shadow-lg);
}

.sidebar .nav-link {
    color: var(--text-light) !important;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    margin: 4px 8px;
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1) !important;
    color: var(--text-light) !important;
    transform: translateX(4px);
}

/* Cards y Contenedores */
.card, .info-box {
    background-color: var(--white) !important;
    border: 1px solid var(--medium-gray) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-sm) !important;
    transition: all 0.3s ease;
}

.card:hover, .info-box:hover {
    box-shadow: var(--shadow-md) !important;
    transform: translateY(-2px);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%) !important;
    color: var(--text-light) !important;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
    padding: 1rem 1.5rem;
    font-weight: 600;
}

/* Botones */
.btn {
    border-radius: var(--radius-md) !important;
    font-weight: 500 !important;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease !important;
    border: none !important;
    cursor: pointer !important;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%) !important;
    color: var(--text-light) !important;
    box-shadow: var(--shadow-sm) !important;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary-blue) 100%) !important;
    transform: translateY(-1px) !important;
    box-shadow: var(--shadow-md) !important;
}

.btn-secondary {
    background-color: var(--medium-gray) !important;
    color: var(--text-dark) !important;
}

.btn-secondary:hover {
    background-color: var(--dark-gray) !important;
    color: var(--text-light) !important;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-green) 0%, #10B981 100%) !important;
    color: var(--text-light) !important;
}

.btn-success:hover {
    background: linear-gradient(135deg, #10B981 0%, var(--success-green) 100%) !important;
    transform: translateY(-1px) !important;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-red) 0%, #EF4444 100%) !important;
    color: var(--text-light) !important;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #EF4444 0%, var(--danger-red) 100%) !important;
    transform: translateY(-1px) !important;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-yellow) 0%, #F59E0B 100%) !important;
    color: var(--text-light) !important;
}

.btn-warning:hover {
    background: linear-gradient(135deg, #F59E0B 0%, var(--warning-yellow) 100%) !important;
    transform: translateY(-1px) !important;
}

/* Enlaces */
a {
    color: var(--primary-blue) !important;
    text-decoration: none !important;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--secondary-blue) !important;
    text-decoration: underline !important;
}

/* Formularios */
.form-control {
    border: 2px solid var(--medium-gray) !important;
    border-radius: var(--radius-md) !important;
    padding: 0.75rem 1rem !important;
    transition: all 0.3s ease !important;
    background-color: var(--white) !important;
}

.form-control:focus {
    border-color: var(--primary-blue) !important;
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1) !important;
    outline: none !important;
}

.form-label {
    font-weight: 600 !important;
    color: var(--text-dark) !important;
    margin-bottom: 0.5rem !important;
}

/* Tablas */
.table {
    background-color: var(--white) !important;
    border-radius: var(--radius-lg) !important;
    overflow: hidden !important;
    box-shadow: var(--shadow-sm) !important;
}

.table thead th {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%) !important;
    color: var(--text-light) !important;
    font-weight: 600 !important;
    padding: 1rem !important;
    border: none !important;
}

.table tbody tr {
    transition: all 0.3s ease;
}

.table tbody tr:nth-child(even) {
    background-color: var(--light-gray) !important;
}

.table tbody tr:hover {
    background-color: var(--light-blue) !important;
    transform: scale(1.01);
}

.table tbody td {
    padding: 1rem !important;
    border-color: var(--medium-gray) !important;
}

/* Alertas */
.alert {
    border-radius: var(--radius-md) !important;
    border: none !important;
    padding: 1rem 1.5rem !important;
    margin-bottom: 1rem !important;
    font-weight: 500 !important;
}

.alert-success {
    background: linear-gradient(135deg, var(--success-green) 0%, #10B981 100%) !important;
    color: var(--text-light) !important;
    box-shadow: var(--shadow-sm) !important;
}

.alert-info {
    background: linear-gradient(135deg, var(--info-blue) 0%, #38BDF8 100%) !important;
    color: var(--text-light) !important;
    box-shadow: var(--shadow-sm) !important;
}

.alert-danger {
    background: linear-gradient(135deg, var(--danger-red) 0%, #EF4444 100%) !important;
    color: var(--text-light) !important;
    box-shadow: var(--shadow-sm) !important;
}

.alert-warning {
    background: linear-gradient(135deg, var(--warning-yellow) 0%, #F59E0B 100%) !important;
    color: var(--text-light) !important;
    box-shadow: var(--shadow-sm) !important;
}

/* Dashboard Cards */
.dashboard-card {
    background-color: var(--white) !important;
    border: 1px solid var(--medium-gray) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-sm) !important;
    transition: all 0.3s ease !important;
    padding: 1.5rem !important;
}

.dashboard-card:hover {
    box-shadow: var(--shadow-md) !important;
    transform: translateY(-4px) !important;
}

.dashboard-card .card-title {
    color: var(--text-dark) !important;
    font-weight: 600 !important;
    font-size: 1.25rem !important;
    margin-bottom: 1rem !important;
}

/* Módulos del dashboard */
.btn_modulos {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%) !important;
    color: var(--text-light) !important;
    border: none !important;
    padding: 12px 24px !important;
    border-radius: var(--radius-md) !important;
    text-decoration: none !important;
    display: inline-block !important;
    transition: all 0.3s ease !important;
    font-weight: 500 !important;
    box-shadow: var(--shadow-sm) !important;
}

.btn_modulos:hover {
    background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary-blue) 100%) !important;
    color: var(--text-light) !important;
    transform: translateY(-2px) !important;
    box-shadow: var(--shadow-md) !important;
    text-decoration: none !important;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #1E3A8A 100%) !important;
    color: var(--text-light) !important;
    padding: 2rem 0 !important;
    margin-top: 3rem !important;
}

/* Paginación */
.pagination .page-link {
    color: var(--primary-blue) !important;
    border-color: var(--medium-gray) !important;
    padding: 0.5rem 0.75rem !important;
    transition: all 0.3s ease !important;
}

.pagination .page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%) !important;
    border-color: var(--primary-blue) !important;
    color: var(--text-light) !important;
}

.pagination .page-link:hover {
    background-color: var(--light-blue) !important;
    color: var(--primary-blue) !important;
}

/* Badges */
.badge {
    border-radius: var(--radius-sm) !important;
    font-weight: 500 !important;
    padding: 0.25rem 0.5rem !important;
}

.badge-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%) !important;
    color: var(--text-light) !important;
}

.badge-success {
    background: linear-gradient(135deg, var(--success-green) 0%, #10B981 100%) !important;
    color: var(--text-light) !important;
}

.badge-danger {
    background: linear-gradient(135deg, var(--danger-red) 0%, #EF4444 100%) !important;
    color: var(--text-light) !important;
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning-yellow) 0%, #F59E0B 100%) !important;
    color: var(--text-light) !important;
}

/* Progress bars */
.progress {
    border-radius: var(--radius-md) !important;
    background-color: var(--medium-gray) !important;
    height: 0.75rem !important;
}

.progress-bar {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%) !important;
    border-radius: var(--radius-md) !important;
}

/* Dropdown menus */
.dropdown-menu {
    background-color: var(--white) !important;
    border: 1px solid var(--medium-gray) !important;
    border-radius: var(--radius-md) !important;
    box-shadow: var(--shadow-lg) !important;
    padding: 0.5rem 0 !important;
}

.dropdown-item {
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease !important;
}

.dropdown-item:hover {
    background-color: var(--light-blue) !important;
    color: var(--primary-blue) !important;
}

/* Modal headers */
.modal-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%) !important;
    color: var(--text-light) !important;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
}

/* Breadcrumbs */
.breadcrumb-item.active {
    color: var(--text-dark) !important;
    font-weight: 600 !important;
}

.breadcrumb-item a {
    color: var(--primary-blue) !important;
    text-decoration: none !important;
}

.breadcrumb-item a:hover {
    color: var(--secondary-blue) !important;
    text-decoration: underline !important;
}

/* Títulos y textos */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-dark) !important;
    font-weight: 600 !important;
    margin-bottom: 1rem !important;
}

h1 {
    font-size: 2.25rem !important;
    color: var(--primary-blue) !important;
}

h2 {
    font-size: 1.875rem !important;
}

h3 {
    font-size: 1.5rem !important;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .sidebar {
        background: linear-gradient(180deg, var(--primary-blue) 0%, #1E3A8A 100%) !important;
    }
    
    .navbar-toggler {
        border-color: var(--text-light) !important;
    }
    
    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
    }
    
    .card, .dashboard-card {
        margin-bottom: 1rem !important;
    }
    
    .btn_modulos {
        width: 100% !important;
        margin-bottom: 0.5rem !important;
    }
}

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

.card, .dashboard-card, .info-box {
    animation: fadeIn 0.5s ease-out;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--medium-gray);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--dark-gray);
}