/* ==================== VARIABLES CSS ==================== */
:root {
    --azul: #392677;
    --amarillo1: #ffd21e;
    --amarillo2: #ffef1e;
    --gris: #919191;
    --blanco: #ffffff;
    --negro: #000000;
    --rojo: #dc3545;
    --verde: #28a745;
    --verde-claro: #d4edda;
    --azul-claro: #cce5ff;
    
    /* Sombras */
    --sombra-principal: 0 10px 30px rgba(0, 0, 0, 0.12);
    --sombra-hover: 0 8px 25px rgba(0, 0, 0, 0.18);
    --sombra-modal: 0 25px 80px rgba(0, 0, 0, 0.25);
    --transicion-suave: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== RESET Y BASE ==================== */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--azul) 0%, var(--amarillo1) 100%);
    min-height: 100vh;
    line-height: 1.6;
}

/* ==================== LAYOUT PRINCIPAL ==================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: var(--sombra-principal);
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.2);
}

/* ==================== ENCABEZADO ==================== */
.header {
    background: var(--azul);
    padding: 30px;
    text-align: center;
    color: var(--blanco);
    position: relative;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255,255,255,0.05) 10px,
        rgba(255,255,255,0.05) 20px
    );
    pointer-events: none;
}

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

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
    position: relative;
    z-index: 2;
}

/* ==================== SECCIÓN DE CARGA ==================== */
.upload-section {
    padding: 40px;
    text-align: center;
    border-bottom: 1px solid #eee;
    background: linear-gradient(to bottom, #ffffff, #fafbfc);
}

.file-input-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 20px;
}

.file-input {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.password-section {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    background: rgba(57, 38, 119, 0.05);
    padding: 20px;
    border-radius: 15px;
    border: 2px dashed var(--azul);
}

#fileName {
    margin-top: 10px;
    color: #666;
    font-style: italic;
}

/* ==================== INPUTS ==================== */
.password-input,
.search-input,
.form-group input,
.form-group select {
    padding: 12px 20px;
    border: 2px solid var(--gris);
    border-radius: 25px;
    font-size: 1rem;
    transition: var(--transicion-suave);
    background: var(--blanco);
    color: var(--azul);
    font-family: inherit;
}

.password-input:focus,
.search-input:focus,
.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--azul);
    box-shadow: 0 0 0 3px rgba(57, 38, 119, 0.1);
    transform: translateY(-2px);
}

/* AGREGAR después de los estilos de password-input existentes: */
.password-input {
    position: relative;
    transition: all 0.3s ease;
}

.password-input:focus {
    outline: none;
    border-color: var(--azul);
    box-shadow: 0 0 0 3px rgba(57, 38, 119, 0.1);
    transform: translateY(-2px);
}

.password-input::placeholder {
    font-style: italic;
    color: #999;
}

/* Indicador de contraseña válida */
.password-input[style*="border-color: rgb(76, 175, 80)"] {
    animation: validPassword 0.3s ease;
}

@keyframes validPassword {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* ==================== BOTONES ==================== */
.file-button,
.save-button,
.process-button,
.modal-button,
.pay-total-btn,
.credit-btn,
.export-btn {
    display: inline-block;
    padding: 15px 30px;
    background: var(--azul);
    color: var(--blanco);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transicion-suave);
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: 0 8px 25px rgba(57, 38, 119, 0.3);
    text-decoration: none;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.file-button:hover,
.save-button:hover,
.process-button:hover,
.modal-button:hover {
    background: var(--amarillo1);
    color: var(--azul);
    transform: translateY(-3px);
    box-shadow: var(--sombra-hover);
}

.file-button::before,
.save-button::before,
.process-button::before,
.modal-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.file-button:active::before,
.save-button:active::before,
.process-button:active::before,
.modal-button:active::before {
    width: 300px;
    height: 300px;
}

.process-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Variantes de botones */
.save-button {
    padding: 10px 20px;
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    border-radius: 20px;
}

.pay-total-btn {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    padding: 0 15px;
    border-radius: 8px;
    font-size: 0.85rem;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.3);
}

.pay-total-btn:hover {
    background: linear-gradient(135deg, #218838 0%, #1dc287 100%);
}

.pay-total-btn:disabled {
    background: var(--gris);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.credit-btn {
    background: linear-gradient(135deg, var(--azul) 0%, var(--amarillo1) 100%);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    white-space: nowrap;
}

.credit-btn.credited {
    background: var(--verde);
}

.credit-btn.credited:hover {
    background: #218838;
}

.credit-btn:disabled {
    background: var(--gris);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.export-btn {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
}

.modal-button.primary {
    background: var(--azul);
    color: var(--blanco);
}

.modal-button.secondary {
    background: var(--gris);
    color: var(--blanco);
}

.modal-button.danger {
    background: var(--rojo);
    color: var(--blanco);
}

.modal-button.danger:hover {
    background: #c82333;
}

/* ==================== SECCIÓN DE DATOS ==================== */
.data-section {
    padding: 40px;
    display: none;
}

/* ==================== PESTAÑAS ==================== */
.tabs-container {
    border-bottom: 2px solid #eee;
    margin-bottom: 30px;
    background: #f8f9fa;
    border-radius: 10px 10px 0 0;
    overflow: hidden;
}

.tabs {
    display: flex;
    gap: 0;
    flex-wrap: wrap;
}

.tab {
    padding: 15px 25px;
    background: #f8f9fa;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transicion-suave);
    border-radius: 0;
    position: relative;
    flex: 1;
    min-width: 150px;
    border-right: 1px solid #e9ecef;
}

.tab:last-child {
    border-right: none;
}

.tab.active {
    background: var(--azul);
    color: var(--blanco);
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--amarillo1);
}

.tab:hover:not(.active) {
    background: var(--amarillo2);
    transform: translateY(-2px);
}

.tab-count {
    background: rgba(255,255,255,0.8);
    color: var(--azul);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    margin-left: 8px;
}

.tab.active .tab-count {
    background: var(--amarillo1);
    color: var(--azul);
}

.tab-content {
    display: none;
}

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

/* ==================== CONTROLES Y FORMULARIOS ==================== */
.controls {
    margin-bottom: 30px;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: center;
    padding: 20px;
    background: rgba(57, 38, 119, 0.02);
    border-radius: 15px;
    border: 1px solid rgba(57, 38, 119, 0.1);
}

.week-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
    flex-wrap: wrap;
}

.group-select,
.sort-select {
    padding: 8px 12px;
    border: 2px solid var(--gris);
    border-radius: 15px;
    font-size: 0.9rem;
    background: var(--blanco);
    color: var(--azul);
    transition: var(--transicion-suave);
}

.group-select:focus,
.sort-select:focus {
    outline: none;
    border-color: var(--azul);
}

.search-input {
    padding: 10px 15px;
    border-radius: 20px;
    width: 300px;
}

/* ==================== TABLAS ==================== */
.table-container {
    overflow-x: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--blanco);
}

th {
    background: var(--azul);
    color: var(--blanco);
    padding: 15px 12px;
    text-align: left;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 2px solid var(--amarillo1);
}

td {
    padding: 12px;
    border-bottom: 1px solid #eee;
    transition: var(--transicion-suave);
}

tr:hover {
    background: linear-gradient(90deg, transparent, var(--amarillo2), transparent);
    transform: scale(1.005);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.clickable-row {
    cursor: pointer;
    transition: all 0.2s ease;
}

.clickable-row:hover {
    transform: scale(1.01);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    background: linear-gradient(90deg, transparent, #e3f2fd, transparent);
}

.editable {
    border: none;
    background: transparent;
    width: 100%;
    font-size: 0.9rem;
}

.editable:focus {
    outline: 2px solid var(--azul);
    background: var(--blanco);
    border-radius: 4px;
}

/* ==================== ESTILOS DE DATOS ==================== */
.money {
    text-align: right;
    font-weight: 600;
}

.negative {
    color: #dc3545;
}

.positive {
    color: #28a745;
}

.week-header {
    background: var(--azul);
    color: var(--blanco);
    padding: 15px 20px;
    margin: 20px 0 10px 0;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.week-summary {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ==================== COLORES DE FILAS ==================== */
.row-red { background-color: #ffebee !important; }
.row-yellow { background-color: #fff9c4 !important; }
.row-green { background-color: #e8f5e8 !important; }
.row-blue { background-color: #e3f2fd !important; }
.row-orange { background-color: #fff3e0 !important; }
.row-purple { background-color: #f3e5f5 !important; }
.row-credited {
    background: linear-gradient(135deg, var(--verde-claro) 0%, #e8f7ea 100%) !important;
    border-left: 5px solid var(--verde) !important;
}

.row-credited::after {
    content: "✅";
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    opacity: 0.7;
}

/* ==================== MODALES - CORREGIDO ==================== */
.modal,
.confirm-modal,
.edit-payment-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(0,0,0,0.4), rgba(57,38,119,0.3));
    backdrop-filter: blur(8px);
    padding: 0;
    overflow-y: auto;
}

.confirm-modal {
    z-index: 1100;
    background-color: rgba(0,0,0,0.7);
}

.edit-payment-modal {
    z-index: 1200;
    background-color: rgba(0,0,0,0.8);
}

/* Contenido del modal - Base */
.modal-content {
    background-color: var(--blanco);
    margin: 5vh auto;
    padding: 30px;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    box-shadow: var(--sombra-modal);
    animation: modalSlideIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border: 1px solid rgba(255,255,255,0.2);
    position: relative;
    overflow-y: auto;
    box-sizing: border-box;
}

/* Modal expandido */
.modal-content-wide {
    background-color: var(--blanco);
    margin: 2vh auto;
    padding: 30px;
    border-radius: 15px;
    width: 95%;
    max-width: 900px;
    max-height: 96vh;
    box-shadow: var(--sombra-modal);
    animation: modalSlideIn 0.3s ease-out;
    position: relative;
    overflow-y: auto;
    box-sizing: border-box;
}

/* Modal de confirmación */
.confirm-modal .modal-content {
    max-width: 400px;
    text-align: center;
    margin: 10vh auto;
}

/* Modal de edición de pago */
.edit-payment-modal .modal-content {
    max-width: 450px;
    margin: 5vh auto;
}

/* Modal de agregar registro */
#addModal {
    z-index: 1050;
}

#addModal .modal-content {
    width: 98%;
    max-width: 550px;
    margin: 2vh auto;
    padding: 25px;
}

@keyframes modalSlideIn {
    from { 
        transform: translateY(-30px) scale(0.9); 
        opacity: 0; 
    }
    to { 
        transform: translateY(0) scale(1); 
        opacity: 1; 
    }
}

.modal h3 {
    margin-bottom: 20px;
    color: #333;
    font-size: 1.5rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--gris);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: var(--blanco);
    color: var(--azul);
}

/* ==================== OPCIONES DE COLOR ==================== */
.color-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.color-option {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 3px solid transparent;
    cursor: pointer;
    transition: var(--transicion-suave);
}

.color-option:hover {
    transform: scale(1.1);
    border-color: #333;
}

.color-option.selected {
    border-color: #333;
    transform: scale(1.1);
}

.color-none {
    background: linear-gradient(45deg, var(--blanco) 45%, #ff4444 50%, var(--blanco) 55%);
    background-size: 10px 10px;
}

.color-red { background-color: #f44336; }
.color-yellow { background-color: #ffeb3b; }
.color-green { background-color: #4caf50; }
.color-blue { background-color: #2196f3; }
.color-orange { background-color: #ff9800; }
.color-purple { background-color: #9c27b0; }

/* ==================== BOTONES DEL MODAL ==================== */
.modal-buttons {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 30px;
}

.modal-button {
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transicion-suave);
}

/* ==================== LAYOUT DEL MODAL ==================== */
.modal-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 20px;
}

.modal-form {
    padding-right: 20px;
    border-right: 2px solid #eee;
}

.modal-history {
    padding-left: 20px;
}

.modal-history h4 {
    color: var(--azul);
    margin-bottom: 20px;
    font-size: 1.2rem;
    border-bottom: 2px solid var(--amarillo1);
    padding-bottom: 10px;
}

/* ==================== HISTORIAL DE PAGOS ==================== */
.payment-history {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 20px;
    border: 1px solid #eee;
    border-radius: 10px;
    padding: 15px;
    background: #f8f9fa;
}

.payment-entry {
    background: var(--blanco);
    padding: 12px 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    border-left: 4px solid var(--azul);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: var(--transicion-suave);
    position: relative;
}

.payment-entry:hover {
    transform: translateX(3px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.payment-entry:last-child {
    margin-bottom: 0;
}

.payment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
}

.payment-amount {
    font-weight: 600;
    color: var(--azul);
    font-size: 1.1rem;
}

.payment-date {
    font-size: 0.85rem;
    color: var(--gris);
}

.payment-person {
    font-size: 0.9rem;
    color: #333;
    font-style: italic;
}

.no-payments {
    text-align: center;
    color: var(--gris);
    font-style: italic;
    padding: 20px;
}

/* ==================== CONTROLES DE PAGO ==================== */
.payment-controls {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    gap: 5px;
    opacity: 0;
    transition: var(--transicion-suave);
}

.payment-entry:hover .payment-controls {
    opacity: 1;
}

.payment-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
    transition: var(--transicion-suave);
}

.payment-btn.edit {
    color: #007bff;
    background: rgba(0, 123, 255, 0.1);
}

.payment-btn.delete {
    color: #dc3545;
    background: rgba(220, 53, 69, 0.1);
}

.payment-btn:hover {
    transform: scale(1.1);
}

/* ==================== SISTEMA DE PAGOS ==================== */
.payment-amount-container {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.payment-amount-input {
    flex: 1;
}

.payment-status-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    padding: 12px;
    background: #f8f9fa;
    border-radius: 8px;
    border: 2px solid #e9ecef;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.status-icon {
    font-size: 1.2rem;
}

.status-text {
    font-weight: 600;
    font-size: 0.9rem;
}

.status-indicator.pending {
    color: #ffc107;
}

.status-indicator.partial {
    color: #17a2b8;
}

.status-indicator.paid {
    color: var(--verde);
}

.status-indicator.credited {
    color: var(--azul);
    background: var(--verde-claro);
    padding: 8px 12px;
    border-radius: 20px;
}

/* ==================== ACCIONES RÁPIDAS ==================== */
.quick-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid var(--azul);
}

.quick-actions::before {
    content: "⚡ Pagos rápidos: ";
    font-weight: 600;
    color: var(--azul);
    margin-right: 10px;
    font-size: 0.9rem;
}

.quick-action-btn {
    background: var(--blanco);
    border: 2px solid var(--azul);
    color: var(--azul);
    padding: 6px 12px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    transition: var(--transicion-suave);
    min-width: 50px;
}

.quick-action-btn:hover {
    background: var(--azul);
    color: var(--blanco);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(57, 38, 119, 0.3);
}

.quick-action-btn.full {
    border-color: var(--verde);
    color: var(--verde);
}

.quick-action-btn.full:hover {
    background: var(--verde);
    color: var(--blanco);
}

/* ==================== RESUMEN ==================== */
.history-summary {
    background: linear-gradient(135deg, var(--azul) 0%, var(--amarillo1) 100%);
    padding: 20px;
    border-radius: 10px;
    color: var(--blanco);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-size: 1rem;
}

.summary-item:last-child {
    margin-bottom: 0;
    font-weight: 600;
    font-size: 1.1rem;
    border-top: 1px solid rgba(255,255,255,0.3);
    padding-top: 10px;
    margin-top: 10px;
}

.amount {
    font-weight: 600;
    background: rgba(255,255,255,0.2);
    padding: 4px 10px;
    border-radius: 15px;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

/* ==================== ESTADOS Y MENSAJES ==================== */
.status {
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
}

.status.success {
    background-color: #eafbe0;
    color: var(--azul);
    border: 1px solid var(--azul);
}

.status.error {
    background-color: #fff3cd;
    color: var(--azul);
    border: 1px solid var(--amarillo1);
}

.loading {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(57, 38, 119, 0.1);
    border-top: 3px solid var(--azul);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 10px;
    vertical-align: middle;
    flex-shrink: 0;
}

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

.record-count {
    font-size: 0.9rem;
    color: var(--gris);
    margin-bottom: 15px;
}

/* ==================== BADGES Y ETIQUETAS ==================== */
.payment-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-left: 5px;
}

.payment-badge.auto {
    background: #e3f2fd;
    color: #1976d2;
}

.payment-badge.manual {
    background: #f3e5f5;
    color: #7b1fa2;
}

.payment-badge.credited {
    background: var(--verde-claro);
    color: var(--verde);
}

/* ==================== ANIMACIONES ==================== */

@keyframes statusPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); background-color: var(--amarillo2); }
    100% { transform: scale(1); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* ==================== ACCESIBILIDAD ==================== */
button:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 2px solid var(--amarillo1);
    outline-offset: 2px;
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 1200px) {
    .week-controls {
        margin-left: 0;
        margin-top: 10px;
    }
    
    .controls {
        justify-content: space-between;
    }
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        margin: 0;
        border-radius: 15px;
    }
    
    .header {
        padding: 20px;
    }
    
    .header h1 {
        font-size: 1.8rem;
    }
    
    .upload-section, 
    .data-section {
        padding: 20px;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 15px;
    }
    
    .search-input {
        width: 100%;
        max-width: none;
    }

    .tabs {
        flex-direction: column;
        gap: 2px;
    }

    .tab {
        border-radius: 8px;
        margin-bottom: 2px;
        flex: none;
        border-right: none;
        border-bottom: 1px solid #e9ecef;
    }

    .tab:last-child {
        border-bottom: none;
    }

    th, td {
        padding: 8px 6px;
        font-size: 0.85rem;
    }

    .table-container {
        border: 2px solid var(--azul);
    }

    .table-container::-webkit-scrollbar {
        height: 8px;
    }

    .table-container::-webkit-scrollbar-track {
        background: #f1f1f1;
        border-radius: 4px;
    }

    .table-container::-webkit-scrollbar-thumb {
        background: var(--azul);
        border-radius: 4px;
    }

    .week-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        margin-left: 0;
    }

    .password-section {
        flex-direction: column;
        gap: 10px;
    }

    .password-input {
        width: 100%;
        max-width: 300px;
    }

    /* Modales en móvil */
    .modal-content {
        width: 95%;
        margin: 2vh auto;
        padding: 20px;
        max-height: 96vh;
    }

    .modal-content-wide {
        width: 98%;
        margin: 1vh auto;
        padding: 15px;
        max-height: 98vh;
    }

    .modal-layout {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .modal-form {
        padding-right: 0;
        border-right: none;
        border-bottom: 2px solid #eee;
        padding-bottom: 20px;
    }

    .modal-history {
        padding-left: 0;
        padding-top: 20px;
    }

    .payment-history {
        max-height: 200px;
    }

    .confirm-modal .modal-content {
        width: 95%;
        margin: 5vh auto;
    }

    .edit-payment-modal .modal-content {
        width: 95%;
        margin: 2vh auto;
    }

    #addModal .modal-content {
        width: 95%;
        margin: 1vh auto;
        padding: 20px;
    }

    .modal-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .payment-amount-container {
        flex-direction: column;
        gap: 8px;
    }
    
    .payment-status-container {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }
    
    .quick-actions {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .quick-actions::before {
        width: 100%;
        text-align: center;
        margin-bottom: 10px;
    }

    .history-header {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }

    .export-btn {
        align-self: center;
        width: fit-content;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 15px;
    }

    .header h1 {
        font-size: 1.6rem;
    }

    .upload-section,
    .data-section {
        padding: 15px;
    }

    .file-button,
    .process-button {
        padding: 12px 20px;
        font-size: 1rem;
    }

    table {
        font-size: 0.8rem;
    }

    th, td {
        padding: 6px 4px;
    }

    .modal-content {
        width: 98%;
        margin: 1vh auto;
        padding: 15px;
        max-height: 98vh;
    }

    .modal-content-wide {
        width: 98%;
        margin: 0.5vh auto;
        padding: 10px;
        max-height: 99vh;
    }

    #addModal .modal-content {
        width: 98%;
        margin: 0.5vh auto;
        padding: 15px;
    }

    #addModal h3 {
        font-size: 1.2rem;
        margin-bottom: 15px;
    }

    #addModal .form-group {
        margin-bottom: 15px;
    }

    #addModal .form-group input,
    #addModal .form-group select {
        padding: 8px 10px;
        font-size: 0.9rem;
    }
}

/* ==================== SCROLL PERSONALIZADO ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--amarillo1);
}

/* ==================== MODO DE ALTO CONTRASTE ==================== */
@media (prefers-contrast: high) {
    :root {
        --azul: #1a0d3d;
        --amarillo1: #ffb300;
        --gris: #666666;
    }
}

/* ==================== REDUCCIÓN DE MOVIMIENTO ==================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ==================== VALIDACIÓN DE FORMULARIOS ==================== */
.form-group input.invalid {
    border-color: var(--rojo);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.25);
}

.form-group input.valid {
    border-color: var(--verde);
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.25);
}

.form-group label.required::after {
    content: " *";
    color: var(--rojo);
    font-weight: bold;
}

/* ==================== PLACEHOLDER MEJORADO ==================== */
::placeholder {
    color: #999;
    font-style: italic;
    opacity: 1;
}

/* ==================== SELECCIÓN DE TEXTO ==================== */
::selection {
    background: var(--amarillo2);
    color: var(--azul);
}

::-moz-selection {
    background: var(--amarillo2);
    color: var(--azul);
}

/* ==================== MEJORAS PARA INPUT DE PAGO ==================== */
#editPago {
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    text-align: right;
    font-weight: 600;
}

#editPago:focus {
    background: #fffef7;
    border-color: #ffd21e;
    box-shadow: 0 0 0 3px rgba(255, 210, 30, 0.2);
}

#editPago::placeholder {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 0.9rem;
    font-weight: normal;
    text-align: left;
}

.payment-amount-input {
    transition: all 0.3s ease;
}

.payment-amount-input.valid {
    border-color: #4caf50 !important;
    background: #e8f5e9 !important;
}

.payment-amount-input.invalid {
    border-color: #e74c3c !important;
    background: #ffebee !important;
}

/* AGREGAR al final del archivo */

/* ==================== PLACEHOLDER MEJORADO PARA PAGO ==================== */
#editPago::placeholder {
    color: #999;
    font-weight: normal;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 1rem;
    opacity: 0.6;
}

#editPago:focus::placeholder {
    opacity: 0.4;
}

#editPago {
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    text-align: right;
    font-weight: 600;
    letter-spacing: 0.5px;
}

#editPago:empty::before {
    content: attr(placeholder);
    color: #999;
}

/* ==================== BOTÓN ACREDITAR DINÁMICO ==================== */
.credit-btn {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.credit-btn[style*="display: none"] {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.8);
}

.payment-status-container {
    transition: all 0.3s ease;
}

/* Animación cuando aparece el botón */
@keyframes creditButtonAppear {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.credit-btn[style*="display: inline-block"] {
    animation: creditButtonAppear 0.4s ease-out;
}

/* ==================== ANIMACIÓN SHAKE PARA ERRORES ==================== */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* ==================== ESTILOS PARA CAMPOS CON ERROR ==================== */
input[style*="border-color: rgb(231, 76, 60)"] {
    animation: shake 0.5s;
}

.form-group input:invalid,
.form-group input[style*="border-color: rgb(231, 76, 60)"] {
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.2);
}

/* ==================== TRANSICIONES SUAVES ==================== */
.form-group input {
    transition: border-color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

/* ==================== SECCIÓN DE ACREDITADOS ==================== */

/* Separador visual antes de la sección de acreditados */
.credited-separator-row {
    height: 30px;
    background: transparent;
}

.credited-separator {
    padding: 0 !important;
    border: none !important;
    background: transparent !important;
}

.credited-section-header-row {
    display: table-row;
}

.credited-section-header {
    background: linear-gradient(135deg, var(--verde) 0%, #20c997 100%) !important;
    color: var(--blanco) !important;
    padding: 0 !important;
    margin: 0 !important;
    border-radius: 0 !important;
    font-weight: 600 !important;
    font-size: 1.15rem !important;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3) !important;
    border: none !important;
    text-align: left !important;
    vertical-align: middle !important;
}

.credited-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    width: 100%;
}

.credited-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.credited-summary {
    font-size: 0.85rem !important;
    opacity: 0.95 !important;
    font-weight: 500 !important;
    font-style: italic;
}

/* Header de columnas para sección acreditada */
.credited-columns-header {
    background: linear-gradient(135deg, #20c997 0%, #17a085 100%) !important;
}

.credited-columns-header th {
    background: transparent !important;
    color: var(--blanco) !important;
    padding: 12px !important;
    text-align: left !important;
    font-weight: 600 !important;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3) !important;
    font-size: 0.95rem;
}

/* Mejorar visualización de filas acreditadas */
.row-credited {
    background: linear-gradient(135deg, #e8f5e9 0%, #f1f8f2 100%) !important;
    border-left: 6px solid var(--verde) !important;
    opacity: 0.85;
    transition: all 0.3s ease;
}

.row-credited:hover {
    opacity: 1;
    background: linear-gradient(135deg, #c8e6c9 0%, #e8f5e9 100%) !important;
    transform: scale(1.002);
}

/* Indicador visual en la celda de edición para acreditados */
.row-credited td:last-child {
    background: rgba(40, 167, 69, 0.1);
    border-radius: 8px;
}

/* Fix para evitar que los íconos se salgan de la celda */
.row-credited td:last-child > div {
    max-width: 100%;
    overflow: visible;
}

/* Ajuste para contador de registros con separación */
.record-count {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 15px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid var(--azul);
}

/* Responsive para sección de acreditados */
@media (max-width: 768px) {
    .credited-separator-row {
        height: 20px;
    }
    
    .credited-header-content {
        flex-direction: column;
        gap: 8px;
        text-align: center;
        padding: 15px;
    }
    
    .credited-summary {
        font-size: 0.75rem !important;
    }
    
    .credited-columns-header th {
        padding: 8px 6px !important;
        font-size: 0.85rem;
    }
    
    .record-count {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ==================== TABLAS SEPARADAS ==================== */

/* Espaciado entre tablas */
.table-container {
    margin-bottom: 30px;
}

.table-container:last-child {
    margin-bottom: 0;
}

/* Tabla de facturas VENCIDAS (roja) */
.overdue-container {
    border: 3px solid #dc3545;
    box-shadow: 0 10px 30px rgba(220, 53, 69, 0.3);
}

.overdue-container::before {
    content: "⚠️ FACTURAS VENCIDAS - PRIORIDAD ALTA";
    display: block;
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: white;
    padding: 15px 20px;
    font-weight: 700;
    font-size: 1.1rem;
    text-align: center;
    letter-spacing: 0.5px;
}

.overdue-container table thead tr {
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%) !important;
}

.overdue-container table thead th {
    background: transparent !important;
}

.overdue-container table tbody tr {
    background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%) !important;
    border-left: 6px solid #dc3545 !important;
}

.overdue-container table tbody tr:hover {
    background: linear-gradient(135deg, #ffcdd2 0%, #ef9a9a 100%) !important;
}

/* Tabla de ADVERTENCIA (próximos a vencer - amarillo) */
.warning-container {
    border: 3px solid #ffc107;
    box-shadow: 0 10px 30px rgba(255, 193, 7, 0.3);
}

.warning-container::before {
    content: "⚠️ FACTURAS PRÓXIMAS A VENCER - ADVERTENCIA";
    display: block;
    background: linear-gradient(135deg, #ffc107 0%, #ffb300 100%);
    color: #fff;
    padding: 15px 20px;
    font-weight: 700;
    font-size: 1.1rem;
    text-align: center;
    letter-spacing: 0.5px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.warning-container table thead tr {
    background: linear-gradient(135deg, #ffc107 0%, #ffb300 100%) !important;
}

.warning-container table thead th {
    background: transparent !important;
    color: #fff !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.warning-container table tbody tr {
    background: linear-gradient(135deg, #fff9c4 0%, #fff59d 100%) !important;
    border-left: 6px solid #ffc107 !important;
}

.warning-container table tbody tr:hover {
    background: linear-gradient(135deg, #fff59d 0%, #fff176 100%) !important;
}

/* Tabla de registros ACREDITADOS (verde) */
.credited-container {
    border: 3px solid var(--verde);
    box-shadow: 0 10px 30px rgba(40, 167, 69, 0.3);
}

.credited-container::before {
    content: "✅ REGISTROS ACREDITADOS";
    display: block;
    background: linear-gradient(135deg, var(--verde) 0%, #20c997 100%);
    color: white;
    padding: 15px 20px;
    font-weight: 700;
    font-size: 1.1rem;
    text-align: center;
    letter-spacing: 0.5px;
}

.credited-container table thead tr {
    background: linear-gradient(135deg, #20c997 0%, #17a085 100%) !important;
}

.credited-container table thead th {
    background: transparent !important;
}

.credited-container table tbody tr {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%) !important;
    border-left: 6px solid var(--verde) !important;
    opacity: 0.9;
}

.credited-container table tbody tr:hover {
    background: linear-gradient(135deg, #c8e6c9 0%, #a5d6a7 100%) !important;
    opacity: 1;
}

/* Remover estilos antiguos que ya no se usan */
.credited-separator-row,
.credited-section-header-row,
.credited-columns-header {
    display: none !important;
}

/* ==================== EXPORTACIÓN GLOBAL ==================== */
.global-export-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 25px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.export-options {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.global-export-button {
    padding: 15px 35px;
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 700;
    box-shadow: 0 8px 25px rgba(17, 153, 142, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.global-export-button.primary {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
}

.global-export-button.secondary {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.global-export-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.global-export-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(17, 153, 142, 0.6);
}

.global-export-button.primary:hover {
    background: linear-gradient(135deg, #38ef7d 0%, #11998e 100%);
}

.global-export-button.secondary:hover {
    background: linear-gradient(135deg, #f5576c 0%, #f093fb 100%);
}

.global-export-button:active::before {
    width: 300px;
    height: 300px;
}

.global-export-button:active {
    transform: translateY(-1px) scale(1.02);
}

.export-info {
    color: white;
    font-size: 0.95rem;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    opacity: 0.95;
}

@media (max-width: 768px) {
    .global-export-section {
        padding: 20px;
    }
    
    .export-options {
        flex-direction: column;
        width: 100%;
    }
    
    .global-export-button {
        width: 100%;
        padding: 12px 25px;
        font-size: 1rem;
    }
    
    .export-info {
        text-align: center;
        font-size: 0.85rem;
    }
}

/* ==================== SELECTOR DE ARCHIVOS ==================== */
.file-selector-list {
    max-height: 400px;
    overflow-y: auto;
    margin: 20px 0;
}

.file-selector-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-selector-item:hover {
    border-color: var(--azul);
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(57, 38, 119, 0.2);
}

.file-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.file-info {
    flex: 1;
}

.file-name {
    font-weight: 600;
    color: var(--azul);
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.file-stats {
    color: var(--gris);
    font-size: 0.9rem;
}