/* css/styles.css */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* Header */
.header {
    background: linear-gradient(45deg, #ff6b6b, #feca57);
    color: white;
    padding: 30px;
    text-align: center;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.2em;
    opacity: 0.9;
}

/* Login Screen */
.login-screen {
    background: white;
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    max-width: 400px;
    margin: 0 auto;
}

.login-screen h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    width: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: linear-gradient(45deg, #28a745, #20c997);
}

.btn-danger {
    background: linear-gradient(45deg, #dc3545, #c82333);
}

.btn-warning {
    background: linear-gradient(45deg, #ffc107, #e0a800);
}

.btn-info {
    background: linear-gradient(45deg, #17a2b8, #138496);
}

/* Main App */
.main-app {
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

/* Navigation */
.nav-tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 3px solid #e9ecef;
}

.nav-tab {
    flex: 1;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    font-weight: 600;
    color: #666;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
}

.nav-tab:hover {
    background: #e9ecef;
    color: #333;
}

.nav-tab.active {
    background: white;
    color: #667eea;
    border-bottom-color: #667eea;
}

.nav-tab i {
    margin-right: 8px;
}

/* Tab Content */
.tab-content {
    display: none;
    padding: 40px;
}

.tab-content.active {
    display: block;
}

/* Forms */
.form-container {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 30px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

/* Tables */
.table-container {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    background: #667eea;
    color: white;
    padding: 15px;
    text-align: left;
    font-weight: 600;
}

.table td {
    padding: 15px;
    border-bottom: 1px solid #eee;
}

.table tr:hover {
    background: #f8f9fa;
}

/* Messages */
.message {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

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

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

.message.info {
    background: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
}

/* User Card */
.user-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    border-left: 4px solid #667eea;
}

.user-card h3 {
    color: #333;
    margin-bottom: 10px;
}

.user-card p {
    margin: 5px 0;
    color: #666;
}

/* Search */
.search-container {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.search-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 15px;
    align-items: end;
}

/* Logout */
.logout-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255,255,255,0.2);
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
}

.logout-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-tabs {
        flex-direction: column;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .search-row {
        grid-template-columns: 1fr;
    }
}

/* Factura Preview */
.factura-preview {
    background: white;
    border: 1px solid #ddd;
    border-radius: 12px;
    padding: 0;
    min-height: 400px;
    margin-top: 20px;
}

.factura {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
}

.factura-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url("logo.png");
    color: white;
    font-weight: bold;
    font-size: 20px;
}

.empresa-info h3 {
    margin: 0;
    font-size: 18px;
    color: #333;
}

.empresa-info p {
    margin: 2px 0;
    font-size: 14px;
    color: #666;
}

.factura-info {
    text-align: right;
    background: #e8f5e8;
    padding: 15px;
    border-radius: 8px;
}

.factura-info h2 {
    margin: 0 0 10px 0;
    color: #333;
    font-size: 24px;
}

.factura-info p {
    margin: 3px 0;
    font-size: 14px;
}

.cliente-info {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 25px;
    border-left: 4px solid #667eea;
}

.cliente-info h4 {
    margin-bottom: 10px;
    color: #333;
}

.detalle-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
}

.detalle-table th {
    background: #e8f5e8;
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: #333;
    border-bottom: 2px solid #ddd;
}

.detalle-table td {
    padding: 15px;
    border-bottom: 1px solid #eee;
}

.detalle-table tr:hover {
    background: #f8f9fa;
}

.totales {
    margin-left: auto;
    width: 300px;
    background: #f8f9fa;
    border-radius: 8px;
    overflow: hidden;
}

.totales table {
    width: 100%;
    border-collapse: collapse;
}

.totales td {
    padding: 12px 20px;
    border-bottom: 1px solid #ddd;
}

.totales .total-final {
    background: #e8f5e8;
    font-weight: bold;
    font-size: 18px;
}

.no-data {
    text-align: center;
    padding: 50px;
    color: #666;
    font-size: 18px;
}

.hidden {
    display: none;
}
.btn-sm {
    padding: 4px 8px;
    font-size: 12px;
    margin: 2px;
}

.btn-info {
    background-color: #17a2b8;
    color: white;
}

.btn-info:hover {
    background-color: #138496;
}

.search-row {
    display: flex;
    align-items: end;
    gap: 10px;
    flex-wrap: wrap;
}

.search-row .form-group {
    flex: 1;
    min-width: 250px;
}

.search-row button {
    height: fit-content;
    white-space: nowrap;
}

/* Estilos para el switch */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #28a745;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* Cambiar color de fondo para usuarios inactivos */
.user-card.inactivo {
    background-color: #f8d7da;
    border-left-color: #dc3545;
}

/* Estilos adicionales para servicio personalizado */

/* Campo de observaciones */
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
    min-height: 80px;
    transition: border-color 0.3s;
}

.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Indicador visual para servicio personalizado */
.precio-personalizado {
    background-color: #fff8dc !important;
    border-color: #ffc107 !important;
    box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.1);
}

.precio-personalizado::placeholder {
    color: #856404;
    font-style: italic;
}

/* Animaci贸n suave para mostrar/ocultar observaciones */
#observacionesGroup,
#observacionesGroup2 {
    transition: all 0.3s ease-in-out;
    overflow: hidden;
}

/* Estilo para el optgroup personalizado */
optgroup[label="PERSONALIZADO"] {
    background-color: #fff3e0;
    font-weight: bold;
}

optgroup[label="PERSONALIZADO"] option {
    background-color: #fff8e1;
    color: #e65100;
    font-weight: normal;
}

/* Badge para servicios personalizados en las listas */
.servicio-personalizado-badge {
    background: linear-gradient(45deg, #ff9800, #ffc107);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: bold;
    margin-left: 8px;
    display: inline-block;
}

/* Estilo para facturas personalizadas en las tablas */
.factura-personalizada {
    background-color: #fff8e1 !important;
    border-left: 4px solid #ff9800;
}

/* Tooltip para explicar el servicio personalizado */
.tooltip-personalizado {
    position: relative;
    cursor: help;
}

.tooltip-personalizado::after {
    content: "Permite establecer precio y descripci贸n personalizados";
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 1000;
}

.tooltip-personalizado:hover::after {
    opacity: 1;
}

.factura-personalizada {
    background-color: #fff8e1 !important;
    border-left: 4px solid #ff9800;
}

.factura-personalizada:hover {
    background-color: #fff3e0 !important;
}

.servicio-personalizado-badge {
    background: linear-gradient(45deg, #ff9800, #ffc107);
    color: white;
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: bold;
    margin-left: 5px;
    display: inline-block;
    vertical-align: top;
}

/* Estilo para campos de precio personalizados */
.precio-personalizado {
    background-color: #fff8dc !important;
    border-color: #ffc107 !important;
    box-shadow: 0 0 0 2px rgba(255, 193, 7, 0.2);
}

.precio-personalizado:focus {
    border-color: #ff9800 !important;
    box-shadow: 0 0 0 3px rgba(255, 152, 0, 0.2);
}

/* Animaci贸n para mostrar/ocultar campos de observaciones */
.observaciones-animate {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        max-height: 200px;
        transform: translateY(0);
    }
}

/* Indicador visual en el formulario cuando est谩 en modo personalizado */
.formulario-personalizado {
    border-left: 4px solid #ff9800;
    background-color: rgba(255, 152, 0, 0.05);
    padding-left: 15px;
}

/* Tooltip mejorado para servicios personalizados */
.tooltip-personalizado {
    position: relative;
    cursor: help;
}

.tooltip-personalizado:hover::before {
    content: "馃挕";
    position: absolute;
    top: -25px;
    left: -5px;
    font-size: 16px;
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-5px); }
    60% { transform: translateY(-2px); }
}

/* Estilo para descripciones largas truncadas */
.descripcion-truncada {
    cursor: pointer;
    color: #0066cc;
    text-decoration: underline dotted;
}

.descripcion-truncada:hover {
    color: #004499;
    text-decoration: underline solid;
}


/* ===== RESPONSIVE DESIGN PARA M脫VILES ===== */
@media screen and (max-width: 768px) {
    
    /* NAVEGACI脫N DE PESTA脩AS */
    .nav-tabs {
        flex-direction: column;
        gap: 0;
    }
    
    .nav-tab {
        padding: 15px 10px;
        font-size: 14px;
        border-bottom: 1px solid #e9ecef;
        border-left: 3px solid transparent;
    }
    
    .nav-tab.active {
        border-left-color: #667eea;
        border-bottom-color: transparent;
    }
    
    /* CONTENEDOR PRINCIPAL */
    .container {
        padding: 10px;
    }
    
    .tab-content {
        padding: 20px 15px;
    }
    
    /* FORMULARIOS M脫VILES */
    .search-container {
        padding: 15px;
    }
    
    .search-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .search-row .form-group {
        margin-bottom: 15px;
    }
    
    .search-row button {
        width: 100%;
        margin: 5px 0;
    }
    
    /* TARJETAS DE USUARIO M脫VILES */
    .user-card {
        margin-bottom: 15px;
        padding: 15px;
        border-radius: 8px;
    }
    
    .user-card h3 {
        font-size: 16px;
        line-height: 1.3;
        margin-bottom: 8px;
    }
    
    /* TABLAS RESPONSIVE */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        border-radius: 8px;
    }
    
    .table {
        min-width: 600px;
        font-size: 13px;
    }
    
    .table th, .table td {
        padding: 8px 6px;
        white-space: nowrap;
    }
    
    /* VISTA DE TARJETAS PARA FACTURAS EN M脫VIL */
    .facturas-mobile {
        display: block;
    }
    
    .facturas-desktop {
        display: none;
    }
    
    .factura-card-mobile {
        background: white;
        border: 1px solid #dee2e6;
        border-radius: 8px;
        margin-bottom: 10px;
        padding: 12px;
        position: relative;
    }
    
    .factura-card-mobile.factura-personalizada {
        border-left: 4px solid #ff9800;
        background-color: #fff8e1;
    }
    
    .factura-number {
        font-size: 12px;
        color: #6c757d;
        font-weight: bold;
        margin-bottom: 5px;
    }
    
    .factura-service {
        font-size: 14px;
        font-weight: 600;
        color: #495057;
        margin-bottom: 8px;
        line-height: 1.3;
    }
    
    .factura-details {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .factura-price {
        font-size: 16px;
        font-weight: bold;
        color: #28a745;
    }
    
    .factura-date {
        font-size: 12px;
        color: #6c757d;
    }
    
    .factura-payment {
        font-size: 12px;
        background: #f8f9fa;
        padding: 2px 8px;
        border-radius: 12px;
        color: #495057;
    }
    
    /* BOTONES M脫VILES */
    .btn {
        padding: 12px 20px;
        font-size: 14px;
        border-radius: 6px;
        min-height: 44px;
        touch-action: manipulation;
    }
    
    .btn-sm {
        padding: 8px 12px;
        font-size: 12px;
        min-height: 36px;
    }
    
    /* ACCIONES DE USUARIO EN M脫VIL */
    .user-actions-mobile {
        display: flex;
        gap: 8px;
        margin-top: 15px;
        flex-wrap: wrap;
    }
    
    .user-actions-mobile .btn {
        flex: 1;
        min-width: 0;
        font-size: 12px;
        padding: 8px 10px;
    }
    
    /* SWITCH M脫VIL */
    .switch {
        transform: scale(0.8);
    }
    
    /* FORMULARIOS DE FACTURA M脫VILES */
    .form-container {
        padding: 20px 15px;
        margin-bottom: 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    /* CAMPOS DE TEXTO Y SELECT */
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; /* Evita zoom en iOS */
        padding: 12px;
        border-radius: 6px;
    }
    
    .form-group textarea {
        min-height: 80px;
        resize: vertical;
    }
    
    /* BADGES M脫VILES */
    .servicio-personalizado-badge {
        font-size: 9px;
        padding: 1px 5px;
        margin-left: 3px;
    }
    
    /* PESTA脩A FACTURAS - OPTIMIZACI脫N M脫VIL */
    .factura-preview {
        font-size: 12px;
        padding: 10px;
    }
    
    .factura {
        padding: 15px;
    }
    
    .factura-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .logo-section {
        justify-content: center;
    }
    
    .logo {
        width: 60px;
        height: 60px;
        font-size: 16px;
    }
    
    .empresa-info h3 {
        font-size: 16px;
    }
    
    .empresa-info p {
        font-size: 12px;
    }
    
    .factura-info h2 {
        font-size: 20px;
    }
    
    .detalle-table {
        font-size: 11px;
    }
    
    .detalle-table th,
    .detalle-table td {
        padding: 8px 4px;
    }
    
    .totales {
        width: 100%;
        margin: 20px 0 0 0;
    }
    
    /* MENSAJES M脫VILES */
    .message {
        padding: 12px;
        font-size: 13px;
        border-radius: 6px;
        margin-bottom: 15px;
    }
    
    /* MODAL M脫VIL */
    .modal-mobile {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.7);
        z-index: 1000;
        padding: 20px 10px;
        overflow-y: auto;
    }
    
    .modal-content-mobile {
        background: white;
        border-radius: 12px;
        padding: 20px;
        margin: auto;
        max-width: 100%;
        max-height: 90vh;
        overflow-y: auto;
    }
    
    /* HEADER M脫VIL */
    .header {
        padding: 20px 15px;
        text-align: center;
    }
    
    .header h1 {
        font-size: 1.8em;
        margin-bottom: 8px;
    }
    
    .header p {
        font-size: 1em;
    }
    
    .logout-btn {
        position: static;
        margin-top: 15px;
        width: 100%;
        max-width: 200px;
    }
    
    /* GRID RESPONSIVO PARA ESTAD脥STICAS */
    .stats-grid-mobile {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 10px;
        margin: 15px 0;
    }
    
    .stat-card-mobile {
        background: white;
        padding: 12px;
        border-radius: 8px;
        text-align: center;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }
    
    .stat-value-mobile {
        font-size: 18px;
        font-weight: bold;
        color: #007bff;
        display: block;
    }
    
    .stat-label-mobile {
        font-size: 11px;
        color: #6c757d;
        margin-top: 2px;
    }
    
    /* SCROLL HORIZONTAL SUAVE */
    .horizontal-scroll {
        overflow-x: auto;
        overflow-y: hidden;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
    }
    
    .horizontal-scroll::-webkit-scrollbar {
        height: 4px;
    }
    
    .horizontal-scroll::-webkit-scrollbar-track {
        background: #f1f1f1;
        border-radius: 2px;
    }
    
    .horizontal-scroll::-webkit-scrollbar-thumb {
        background: #888;
        border-radius: 2px;
    }
    
    /* OCULTAR ELEMENTOS NO ESENCIALES EN M脫VIL */
    .desktop-only {
        display: none;
    }
    
    /* TOOLTIP M脫VIL */
    .tooltip-mobile {
        position: relative;
    }
    
    .tooltip-mobile:active::after {
        content: attr(data-tooltip);
        position: absolute;
        bottom: 100%;
        left: 50%;
        transform: translateX(-50%);
        background: rgba(0,0,0,0.9);
        color: white;
        padding: 8px 12px;
        border-radius: 4px;
        font-size: 12px;
        white-space: nowrap;
        z-index: 1000;
        max-width: 200px;
        white-space: normal;
    }
}

/* TABLET (768px - 1024px) */
@media screen and (min-width: 769px) and (max-width: 1024px) {
    .form-row {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .nav-tabs {
        flex-direction: row;
    }
    
    .table {
        font-size: 14px;
    }
    
    .facturas-mobile {
        display: none;
    }
    
    .facturas-desktop {
        display: block;
    }
}

/* DESKTOP (1025px+) */
@media screen and (min-width: 1025px) {
    .facturas-mobile {
        display: none;
    }
    
    .facturas-desktop {
        display: block;
    }
    
    .desktop-only {
        display: block;
    }
}
/* Clases para mostrar/ocultar contenido seg煤n dispositivo */
@media screen and (max-width: 768px) {
    .mobile-only { 
        display: inline !important; 
    }
    
    .desktop-only { 
        display: none !important; 
    }
    
    /* Mejorar touch targets */
    button, input, select, textarea {
        min-height: 44px;
        touch-action: manipulation;
    }
    
    /* Evitar zoom en inputs en iOS */
    input, select, textarea {
        font-size: 16px;
    }
    
    /* Mejorar scroll en tablas */
    .table-container {
        -webkit-overflow-scrolling: touch;
        border-radius: 0;
    }
    
    /* Header m贸vil m谩s compacto */
    .header {
        position: relative;
        padding: 15px 10px;
    }
    
    .logout-btn {
        position: static;
        display: block;
        margin: 10px auto 0;
        width: auto;
        padding: 8px 16px;
        font-size: 12px;
    }
    
    /* Mensajes m谩s compactos */
    .message {
        padding: 10px;
        margin-bottom: 10px;
        font-size: 13px;
    }
    
    /* Formulario de nueva factura m贸vil */
    #nuevaFacturaForm {
        margin-top: 15px;
        padding: 15px;
        border-radius: 8px;
        background: #f8f9fa;
    }
    
    #nuevaFacturaForm .form-row {
        gap: 10px;
    }
    
    #nuevaFacturaForm .btn {
        margin: 5px 0;
        width: 100%;
    }
    
    /* Vista previa de factura m贸vil */
    .factura-preview {
        margin-top: 15px;
        border-radius: 8px;
        overflow: hidden;
    }
    
    .factura-preview .no-data {
        padding: 30px 15px;
        font-size: 14px;
    }
    
    /* Optimizar inputs de fecha y n煤mero */
    input[type="date"],
    input[type="month"],
    input[type="number"] {
        appearance: none;
        -webkit-appearance: none;
    }
    
    /* Mejorar contraste en modo oscuro */
    @media (prefers-color-scheme: dark) {
        .user-card {
            background: #2d3748;
            color: #e2e8f0;
            border-color: #4a5568;
        }
        
        .stat-card-mobile {
            background: #4a5568;
            color: #e2e8f0;
        }
        
        .factura-card-mobile {
            background: #2d3748;
            border-color: #4a5568;
            color: #e2e8f0;
        }
    }
}

@media screen and (min-width: 769px) {
    .mobile-only { 
        display: none !important; 
    }
    
    .desktop-only { 
        display: inline !important; 
    }
}

/* Orientaci贸n horizontal en m贸viles */
@media screen and (max-width: 768px) and (orientation: landscape) {
    .nav-tabs {
        flex-direction: row;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-tab {
        white-space: nowrap;
        min-width: 120px;
        font-size: 12px;
        padding: 10px 15px;
    }
    
    .stats-grid-mobile {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .user-actions-mobile {
        flex-direction: row;
        justify-content: center;
    }
}

/* Dispositivos muy peque帽os (menos de 320px) */
@media screen and (max-width: 320px) {
    .container {
        padding: 5px;
    }
    
    .tab-content {
        padding: 10px;
    }
    
    .user-card {
        padding: 10px;
    }
    
    .btn {
        font-size: 12px;
        padding: 8px 12px;
    }
    
    .stats-grid-mobile {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px;
    }
}

/* Mejoras para accesibilidad */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible mejorado para navegaci贸n por teclado */
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #007bff;
    outline-offset: 2px;
}

@media (max-width: 768px) {
#formNuevaFactura .form-row {
grid-template-columns: 1fr;
}
#formNuevaFactura button {
width: 100%;
margin-top: 10px;
}
.facturas-desktop { display: none; }
.facturas-mobile { display: block; }


tr {
    width: 100%;
    height: 100%;
    position: relative;
    display: grid;
}
tr {
    width: 300px;
    height: 100%;
    position: relative;
    display: grid;
}
}


/* Por defecto, ocultamos la vista móvil en desktop */
.facturas-mobile { display: none; }


/* Estilos de observaciones personalizadas también aplicados al grupo 2 */
#observacionesGroup2 {
transition: all 0.3s ease-in-out;
overflow: hidden;
}


/* Para resaltar campos personalizados en renovaciones */
#formNuevaFactura .precio-personalizado {
background-color: #fff8dc !important;
border-color: #ffc107 !important;
}