:root {
    --primary-color: #ffa500;
    --text-color: #333;
    --background-color: #f5f5f5;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --pending-color: #ffc107;
    --paid-color: #28a745;
    --partial-color: #17a2b8;
    --card-border-radius: 15px;
    --button-border-radius: 6px;
    --input-border-radius: 6px;
    --box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    --transition-speed: 0.3s;
    --spacing-xs: 5px;
    --spacing-sm: 8px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --border-color: #eee;
}

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

html {
    font-size: 16px;
}

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.5;
}

.dashboard {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

.main-content {
    flex: 1;
    padding: var(--spacing-lg);
    transition: margin-left var(--transition-speed) ease-in-out;
    width: 100%;
}

/* Barra superior */
.top-bar {
    background-color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--card-border-radius);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.top-bar h1 {
    font-size: var(--font-size-xl);
    color: var(--text-color);
    margin: 0;
}

.mobile-toggle {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--text-color);
    display: none;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--card-border-radius);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    animation: fadeIn 0.5s ease-out;
    overflow: hidden;
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.card-header h2 {
    font-size: var(--font-size-lg);
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
}

.card-header h2 i {
    color: var(--primary-color);
}

.card-body {
    padding: var(--spacing-lg);
}

/* Filtros */
.filters-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.filter-group label {
    font-weight: 500;
    color: #444;
}

.date-range,
.amount-range {
    display: flex;
    gap: var(--spacing-sm);
}

.date-range .filter-input,
.amount-range .filter-input {
    flex: 1;
    min-width: 0;
}

.filter-input,
.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid #ddd;
    border-radius: var(--input-border-radius);
    font-size: var(--font-size-sm);
    width: 100%;
}

.filter-input:focus,
.filter-select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 165, 0, 0.1);
}

/* Tabla de Pagos */
.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 -20px;
    padding: 0 20px;
    width: calc(100% + 40px);
    position: relative;
    left: -20px;
}

.payments-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-sm);
    min-width: 800px;
}

.payments-table th,
.payments-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.payments-table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #495057;
    position: sticky;
    top: 0;
    z-index: 10;
}

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

.payments-table td:last-child {
    white-space: nowrap;
}

/* Estados de pago */
.payment-status {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    white-space: nowrap;
}

.status-pendiente {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--pending-color);
}

.status-pagado {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--paid-color);
}

.status-parcial {
    background-color: rgba(23, 162, 184, 0.1);
    color: var(--partial-color);
}

/* Calendario */
.calendar-card {
    overflow: hidden;
}

.calendar-card iframe {
    width: 100%;
    height: 600px;
    border: none;
    display: block;
}

/* Botones y Acciones */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--button-border-radius);
    font-size: var(--font-size-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-speed) ease;
    border: none;
    font-weight: 500;
    min-height: 38px;
    min-width: 44px;
}

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

.btn-add:hover {
    background-color: #e69500;
    transform: translateY(-1px);
}

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

.btn-save:hover {
    background-color: #218838;
    transform: translateY(-1px);
}

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

.btn-cancel:hover {
    background-color: #5a6268;
    transform: translateY(-1px);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.btn-view,
.btn-summary,
.btn-download {
    padding: 6px;
    min-width: 32px;
    min-height: 32px;
}

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

.btn-view:hover {
    background-color: #e69500;
}

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

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

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

.btn-download:hover {
    background-color: #5a6268;
}

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: var(--spacing-md);
    overflow-y: auto;
}

.modal-content {
    background: white;
    border-radius: var(--card-border-radius);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    animation: modalFadeIn 0.3s ease-out;
    position: relative;
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: white;
    z-index: 10;
    border-top-left-radius: var(--card-border-radius);
    border-top-right-radius: var(--card-border-radius);
}

.modal-header h2 {
    font-size: var(--font-size-lg);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color var(--transition-speed) ease;
}

.modal-close:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    position: sticky;
    bottom: 0;
    background: white;
    z-index: 10;
    border-bottom-left-radius: var(--card-border-radius);
    border-bottom-right-radius: var(--card-border-radius);
}

/* Formularios */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid #ddd;
    border-radius: var(--input-border-radius);
    font-size: var(--font-size-sm);
    transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 165, 0, 0.1);
}

.file-upload {
    position: relative;
    display: inline-block;
    width: 100%;
}

.file-upload input[type="file"] {
    position: absolute;
    width: 0.1px;
    height: 0.1px;
    opacity: 0;
    overflow: hidden;
    z-index: -1;
}

.file-upload label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: #f8f9fa;
    border: 2px dashed #ddd;
    border-radius: var(--input-border-radius);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    width: 100%;
    min-height: 44px;
}

.file-upload label:hover {
    border-color: var(--primary-color);
    background: rgba(255, 165, 0, 0.05);
}

/* Estilos para el modal de detalles */
.payment-details {
    margin-bottom: var(--spacing-lg);
}

.payment-details h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-xs);
    font-size: var(--font-size-md);
}

.payment-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.payment-info-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.payment-info-label {
    font-weight: 500;
    color: #666;
    font-size: var(--font-size-xs);
}

.payment-info-value {
    font-size: var(--font-size-md);
}

.payment-history {
    margin-top: var(--spacing-lg);
}

.payment-history-item {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.payment-history-item:last-child {
    border-bottom: none;
}

.payment-progress {
    margin: var(--spacing-md) 0;
}

.progress-bar {
    height: 10px;
    background-color: #e9ecef;
    border-radius: 5px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--success-color);
    transition: width 0.5s ease;
}

/* Alertas y resúmenes */
.alerts-container {
    margin-bottom: var(--spacing-lg);
}

.payment-alerts {
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    border-radius: var(--card-border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.payment-alerts h3 {
    color: #856404;
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-md);
}

.payment-alerts ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.payment-alerts li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid #ffeeba;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.payment-alerts li:last-child {
    border-bottom: none;
}

.payment-alerts .urgent {
    color: #721c24;
    background-color: #f8d7da;
    padding: var(--spacing-sm);
    border-radius: var(--input-border-radius);
}

.payment-alerts .warning {
    color: #856404;
}

.payment-alerts .info {
    color: #0c5460;
}

.payment-alerts .btn-warning {
    font-size: var(--font-size-xs);
    padding: 4px 8px;
    background-color: #ffc107;
    border: none;
    border-radius: var(--input-border-radius);
    cursor: pointer;
}

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

.summary-alerts {
    background-color: #d1ecf1;
    border: 1px solid #bee5eb;
    border-radius: var(--card-border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.summary-alerts h3 {
    color: #0c5460;
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-md);
}

.summary-alerts .summary-cards {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.summary-card {
    flex: 1;
    min-width: 200px;
    padding: var(--spacing-md);
    border-radius: var(--input-border-radius);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.summary-card.pending {
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
}

.summary-card.paid {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
}

.summary-card.partial {
    background-color: #d1ecf1;
    border: 1px solid #bee5eb;
}

.summary-card .title {
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
    color: #495057;
}

.summary-card .amount {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
}

.summary-card .count {
    font-size: var(--font-size-xs);
    color: #666;
}

.summary-card.pending .amount {
    color: #856404;
}

.summary-card.paid .amount {
    color: #155724;
}

.summary-card.partial .amount {
    color: #0c5460;
}

/* Animaciones */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Estilos para pantallas medianas (tablets) */
@media (max-width: 992px) {
    .main-content {
        padding: var(--spacing-md);
    }

    .calendar-card iframe {
        height: 500px;
    }

    .summary-card {
        min-width: 160px;
    }

    .filters-container {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

/* Estilos para pantallas pequeñas (móviles) */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    .main-content {
        padding: var(--spacing-sm);
    }

    .top-bar {
        padding: var(--spacing-sm) var(--spacing-md);
        flex-wrap: wrap;
    }

    .top-bar h1 {
        font-size: var(--font-size-lg);
        width: 100%;
        margin-top: var(--spacing-xs);
    }

    .mobile-toggle {
        display: block;
    }

    .card-header {
        padding: var(--spacing-md);
        flex-direction: column;
        align-items: flex-start;
    }

    .card-header .btn-add {
        width: 100%;
        margin-top: var(--spacing-xs);
    }

    .card-body {
        padding: var(--spacing-md);
    }

    .filters-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .date-range,
    .amount-range {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .modal-content {
        max-height: 95vh;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--spacing-md);
    }

    .modal-footer {
        flex-direction: column;
    }

    .modal-footer .btn {
        width: 100%;
    }

    .payment-info {
        grid-template-columns: 1fr;
    }

    .summary-alerts .summary-cards {
        flex-direction: column;
    }

    .summary-card {
        min-width: 100%;
    }

    .calendar-card iframe {
        height: 400px;
    }

    /* Mejoras para la tabla en móviles */
    .table-container {
        margin: 0 -15px;
        padding: 0 15px;
        width: calc(100% + 30px);
        left: -15px;
    }

    .payments-table {
        min-width: 650px;
    }

    .payments-table th,
    .payments-table td {
        padding: var(--spacing-sm);
    }

    /* Indicador de scroll horizontal */
    .table-container::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, var(--primary-color) 0%, transparent 100%);
        opacity: 0.7;
        animation: scrollIndicator 2s infinite;
        border-radius: 3px;
    }

    @keyframes scrollIndicator {
        0% {
            opacity: 0.7;
            transform: translateX(0);
        }

        50% {
            opacity: 0.3;
            transform: translateX(20%);
        }

        100% {
            opacity: 0.7;
            transform: translateX(0);
        }
    }

    /* Mejoras para los botones de acción en móviles */
    .action-buttons {
        flex-direction: row;
        justify-content: flex-end;
    }

    .btn-view,
    .btn-summary,
    .btn-download {
        min-width: 36px;
        min-height: 36px;
    }
}

/* Estilos para pantallas muy pequeñas */
@media (max-width: 480px) {
    .payment-alerts li {
        flex-direction: column;
        align-items: flex-start;
    }

    .payment-alerts .btn-warning {
        margin-top: var(--spacing-xs);
        width: 100%;
    }

    .calendar-card iframe {
        height: 350px;
    }

    /* Tabla adaptativa para móviles muy pequeños */
    .payments-table {
        min-width: 500px;
    }
}

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

/* Soporte para modo oscuro del sistema */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #f5f5f5;
        --text-color: #333;
    }

    body {
        background-color: var(--background-color);
        color: var(--text-color);
    }

    .top-bar,
    .card,
    .modal-content,
    .modal-header,
    .modal-footer {
        background-color: white;
    }
}

/* Mejoras para dispositivos táctiles */
@media (hover: none) {
    .btn:hover {
        transform: none !important;
    }

    .file-upload label {
        padding: var(--spacing-md);
    }

    input,
    select,
    textarea,
    button {
        font-size: 16px !important;
        /* Evita zoom en iOS */
    }
}

/* Mejoras para pantallas de alta densidad */
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {
    .card {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }
}

/* Mejoras para impresión */
@media print {
    .dashboard {
        display: block;
    }

    .main-content {
        margin: 0 !important;
        padding: 0 !important;
    }

    .top-bar,
    .btn,
    .calendar-card,
    .modal-overlay {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
        break-inside: avoid;
        margin-bottom: 20px;
    }

    .payments-table {
        width: 100% !important;
        min-width: auto !important;
    }

    .table-container {
        overflow: visible;
        margin: 0;
        padding: 0;
        width: 100%;
        left: 0;
    }

    .table-container::after {
        display: none;
    }
}