/* Variables de color del sistema */
:root {
    --color-primario: #0d6efd;
    --color-secundario: #dc3545;
    --color-blanco: #ffffff;
    --color-gris-claro: #f8f9fa;
    --color-gris: #6c757d;
    --color-oscuro: #212529;
}

/* Estilos generales */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-gris-claro);
    color: var(--color-oscuro);
}

/* Navbar */
.navbar {
    background: linear-gradient(135deg, var(--color-primario) 0%, #0a58ca 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--color-blanco) !important;
    transform: translateY(-2px);
}

/* Sidebar */
.sidebar {
    min-height: 100vh;
    background-color: var(--color-blanco);
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.05);
    padding-top: 20px;
}

.sidebar .nav-link {
    color: var(--color-oscuro);
    padding: 12px 20px;
    margin: 5px 10px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.sidebar .nav-link:hover {
    background-color: var(--color-gris-claro);
    color: var(--color-primario);
    transform: translateX(5px);
}

.sidebar .nav-link.active {
    background: linear-gradient(135deg, var(--color-primario) 0%, #0a58ca 100%);
    color: var(--color-blanco) !important;
}

.sidebar .nav-link i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

/* Cards */
.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.card-header {
    background: linear-gradient(135deg, var(--color-primario) 0%, #0a58ca 100%);
    color: var(--color-blanco);
    font-weight: 600;
    border: none;
    padding: 15px 20px;
}

/* Botones */
.btn {
    font-weight: 500;
    padding: 10px 25px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primario) 0%, #0a58ca 100%);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(13, 110, 253, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, var(--color-secundario) 0%, #b02a37 100%);
    border: none;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(220, 53, 69, 0.4);
}

/* Tablas */
.table {
    background-color: var(--color-blanco);
    border-radius: 10px;
    overflow: hidden;
}

.table thead {
    background: linear-gradient(135deg, var(--color-primario) 0%, #0a58ca 100%);
    color: var(--color-blanco);
}

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

.table tbody tr:hover {
    background-color: var(--color-gris-claro);
    transform: scale(1.01);
}

/* Formularios */
.form-control, .form-select {
    border-radius: 8px;
    border: 2px solid #e0e0e0;
    padding: 10px 15px;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.form-control:focus, .form-select:focus {
    border-color: var(--color-primario);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

.form-label {
    font-weight: 500;
    color: var(--color-oscuro);
    margin-bottom: 8px;
}

/* Stats Cards */
.stat-card {
    background: linear-gradient(135deg, var(--color-primario) 0%, #0a58ca 100%);
    color: var(--color-blanco);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 20px;
}

.stat-card.danger {
    background: linear-gradient(135deg, var(--color-secundario) 0%, #b02a37 100%);
}

.stat-card.success {
    background: linear-gradient(135deg, #198754 0%, #146c43 100%);
}

.stat-card.warning {
    background: linear-gradient(135deg, #ffc107 0%, #e0a800 100%);
}

.stat-card .stat-icon {
    font-size: 3rem;
    opacity: 0.3;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-card .stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Badges */
.badge {
    padding: 8px 15px;
    font-weight: 500;
    border-radius: 6px;
}

/* Login/Register */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primario) 0%, #0a58ca 100%);
}

.auth-card {
    background: var(--color-blanco);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        z-index: 1000;
        transition: all 0.3s ease;
    }

    .sidebar.show {
        left: 0;
    }

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

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

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

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

/* Loading Spinner */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* PWA Styles */
.install-prompt {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--color-blanco);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}

.install-prompt button {
    margin-top: 10px;
}

/* Print Styles */
@media print {
    .navbar,
    .sidebar,
    .btn,
    .no-print {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}