:root {
    --primary-color: #4a90e2;
    --secondary-color: #f5f7fa;
    --text-color: #333;
    --border-color: #e1e4e8;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    background-color: var(--secondary-color);
    color: var(--text-color);
}

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

.navbar {
    background-color: #fff;
    padding: 10px 20px;
    display: flex;
    justify-content: center;
    gap: 20px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    padding: 10px 15px;
    border-radius: 5px;
    transition: background-color 0.3s, color 0.3s;
}

.nav-link.active, .nav-link:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.page {
    display: none;
    background-color: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.page.active {
    display: block;
}

h1, h2 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
    margin-top: 0;
}

.controles-mes {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background-color: var(--secondary-color);
    border-radius: 8px;
}
.controles-mes label {
    font-weight: bold;
}

.controles-datos {
    margin-bottom: 20px;
    padding: 15px;
    background-color: var(--secondary-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.controles-datos h3 {
    border: none;
    margin: 0;
}

/* Dashboard */
.dashboard-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background-color: var(--secondary-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.card h2 {
    margin: 0 0 10px;
    font-size: 1.2em;
    border: none;
}

.card p {
    margin: 0;
    font-size: 1.8em;
    font-weight: bold;
}

.card.balance p {
    color: var(--success-color);
}

.card.necesario p {
    color: var(--warning-color);
}

.investment-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

/* Formularios */
form {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 25px;
    align-items: center;
}

form input[type="text"],
form input[type="number"] {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    min-width: 150px;
}

form button {
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

form button:hover {
    background-color: #357abd;
}

/* Tablas */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

thead {
    background-color: var(--secondary-color);
}

.action-btn {
    padding: 5px 10px;
    border: none;
    border-radius: 4px;
    color: white;
    cursor: pointer;
    margin-right: 5px;
}

.edit-btn { background-color: var(--warning-color); }
.delete-btn { background-color: var(--danger-color); }
.factura-btn { background-color: #17a2b8; }
.deducible-btn { background-color: #6610f2; }

/* Estilos para Estados */
.status {
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.8em;
    font-weight: bold;
    color: #fff;
    text-align: center;
}
.status-pendiente { background-color: var(--warning-color); color: #333; }
.status-completado { background-color: var(--success-color); }
.status-activo { background-color: var(--primary-color); }
.status-vendido { background-color: #6c757d; }
.status-deducible { background-color: #6610f2; }
.status-facturado { background-color: #17a2b8; }


/* Estilos para el Modal */
.modal {
    display: none; 
    position: fixed; 
    z-index: 1000; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto; 
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 25px;
    border: 1px solid var(--border-color);
    width: 80%;
    max-width: 500px;
    border-radius: 8px;
    position: relative;
}

.close-btn {
    color: #aaa;
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
}

.close-btn:hover,
.close-btn:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

/* Estilos para Créditos */
.campos-credito {
    display: none; /* Ocultos por defecto */
    flex-basis: 100%;
    gap: 15px;
    flex-wrap: wrap;
}

.creditos-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.credito-card {
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--primary-color);
    padding: 20px;
    border-radius: 8px;
}

.credito-card h3 {
    margin-top: 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.credito-card .tipo-label {
    background-color: var(--primary-color);
    color: white;
    padding: 3px 8px;
    border-radius: 5px;
    font-size: 0.8em;
    float: right;
}

.credito-card p {
    margin: 10px 0;
}

.credito-card .acciones-credito {
    margin-top: 15px;
    display: flex;
    gap: 10px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 15px;
}

.credito-card .acciones-pago {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.credito-card .pago-personalizado {
    display: flex;
    gap: 10px;
}

.credito-card .pago-personalizado input {
    flex-grow: 1;
}

.credito-card .pago-btn {
    background-color: var(--success-color);
}

/* Estilo para crédito liquidado */
.credito-card.liquidado {
    border-left-color: var(--success-color);
    background-color: #f0fff4; /* Un verde muy pálido */
}

.credito-card .estado-liquidado {
    font-weight: bold;
    color: var(--success-color);
    text-align: center;
    display: block;
    margin-top: 15px;
}
/* Estilos para Alertas y Confirmaciones HTML */
#alerta-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.alerta {
    padding: 15px 20px;
    border-radius: 5px;
    color: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    min-width: 250px;
    opacity: 0;
    transform: translateX(100%);
    animation: slideIn 0.5s forwards, fadeOut 0.5s 3.5s forwards;
}

.alerta.success { background-color: var(--success-color); }
.alerta.error { background-color: var(--danger-color); }

@keyframes slideIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
        transform: scale(0.9);
    }
}

.confirmacion-acciones {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-top: 20px;
}

#modal-confirmacion .modal-content {
    max-width: 400px;
}

/* Estilos para el modal de contraseña */
#modal-password {
    background-color: rgba(0,0,0,0.8); /* Más oscuro para indicar bloqueo */
}

/* Estilos para Gráficos */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-top: 30px;
    margin-bottom: 30px;
}

.chart-card {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* --- ESTILOS RESPONSIVOS PARA MÓVILES --- */
@media (max-width: 768px) {
    .container {
        margin: 10px auto;
        padding: 0 10px;
    }

    .navbar {
        justify-content: flex-start;
        overflow-x: auto;
        padding: 5px;
    }

    .nav-link {
        white-space: nowrap; /* Evita que el texto del enlace se parta */
    }

    h1 {
        font-size: 1.8em;
    }

    h2 {
        font-size: 1.4em;
    }

    form {
        flex-direction: column;
        align-items: stretch; /* Los inputs ocupan todo el ancho */
    }

    .charts-container {
        grid-template-columns: 1fr; /* Una sola columna para gráficos */
    }

    .modal-content {
        width: 95%;
        margin: 10% auto;
        padding: 20px;
    }
}