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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background-color: #2196F3;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.nav a {
    color: white;
    text-decoration: none;
    padding: 5px 10px;
    border-radius: 3px;
    transition: background-color 0.3s;
}

.nav a:hover, .nav a.active {
    background-color: rgba(255,255,255,0.2);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Login */
.login-body {
    background: linear-gradient(135deg, #2196F3, #21CBF3);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

.login-form h1 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #2196F3;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

/* Formularios */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

/* Botones */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.3s;
    text-align: center;
}

.btn-primary {
    background-color: #2196F3;
    color: white;
}

.btn-primary:hover {
    background-color: #1976D2;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #545b62;
}

.btn-success {
    background-color: #28a745;
    color: white;
}

.btn-success:hover {
    background-color: #218838;
}

.btn-warning {
    background-color: #ffc107;
    color: #212529;
}

.btn-warning:hover {
    background-color: #e0a800;
}

.btn-danger {
    background-color: #dc3545;
    color: white;
}

.btn-danger:hover {
    background-color: #c82333;
}

.btn-small {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

/* Tablas */
table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

table th,
table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

table th {
    background-color: #f8f9fa;
    font-weight: 600;
}

table tr:hover {
    background-color: #f8f9fa;
}

/* Alertas */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert.warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

/* Badges */
.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge.success {
    background-color: #28a745;
    color: white;
}

.badge.warning {
    background-color: #ffc107;
    color: #212529;
}

.badge.danger {
    background-color: #dc3545;
    color: white;
}

/* Cards */
.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card.warning {
    border-left: 4px solid #ffc107;
}

.stat-card.danger {
    border-left: 4px solid #dc3545;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    margin: 0.5rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

/* Filas con estado */
.low-stock {
    background-color: #fff3cd !important;
}

.warning-row {
    background-color: #fff3cd;
}

.danger-row {
    background-color: #f8d7da;
}

/* Formularios en línea */
.inline-form {
    display: inline;
}

/* Contenedores específicos */
.sales-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
}

.add-product-section,
.cart-section {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.checkout-form {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #ddd;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .sales-container {
        grid-template-columns: 1fr;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Dashboard actions */
.dashboard-actions {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.recent-activity {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-top: 2rem;
}

.inventory-actions {
    margin: 1rem 0;
}

.form-container {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin: 1rem 0;
}

.alert-section {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.alert-stats {
    margin-top: 2rem;
}


/* Estilos para funcionalidades JavaScript */

/* Notificaciones */
.notificacion {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 4px;
    color: white;
    z-index: 10000;
    max-width: 300px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    animation: slideInRight 0.3s ease-out;
}

.notificacion.success { background-color: #28a745; }
.notificacion.error { background-color: #dc3545; }
.notificacion.warning { 
    background-color: #ffc107; 
    color: #212529;
}
.notificacion.info { background-color: #17a2b8; }

/* Tooltips */
.tooltip {
    position: absolute;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    z-index: 1000;
    white-space: nowrap;
    animation: fadeIn 0.2s ease-out;
}

/* Mensajes de error */
.error-message {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Buscadores */
.buscador {
    margin-bottom: 1rem;
    position: relative;
}

.buscador input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.buscador::after {
    content: '🔍';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
}

/* Animaciones */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Estados de carga */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #2196F3;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Efectos hover mejorados */
.btn {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.btn:active {
    transform: translateY(0);
}

/* Mejoras para tablas */
table tr {
    transition: background-color 0.2s ease;
}

table tr:hover {
    background-color: #f8f9fa;
}

/* Responsive mejorado */
@media (max-width: 768px) {
    .notificacion {
        left: 20px;
        right: 20px;
        max-width: none;
    }
    
    .tooltip {
        display: none; /* Ocultar tooltips en móviles */
    }
}

/* High contrast support */
@media (prefers-contrast: high) {
    .notificacion {
        border: 2px solid white;
    }
    
    .btn {
        border: 2px solid;
    }
}