:root {
    --primary-color: #3498db;
    --primary-color-dark: #2980b9;
    --dark-bg: #2c3e50;
    --light-bg: #f4f6f9;
    --text-color: #333;
    --white-color: #fff;
    --gray-light: #f8f9fa;
    --gray-border: #dee2e6;
    --danger-color: #e74c3c;
    --danger-color-dark: #c0392b;
    --success-color: #27ae60;
    --cargo-color: #c0392b;
    --abono-color: #27ae60;
    --saldo-positivo-bg: #eafaf1;
    --saldo-negativo-bg: #fdedec;
    --saldo-cero-bg: #e8f6f3;
}

body, html {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--light-bg);
    color: var(--text-color);
    height: 100%;
}

h1, h2, h3 {
    color: var(--dark-bg);
}

/* --- Contenedores Principales --- */
.app-container {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 280px;
    background-color: var(--dark-bg);
    color: var(--white-color);
    padding: 20px;
    flex-shrink: 0; /* MUY IMPORTANTE: Evita que el menú se encoja */
    display: flex;
    flex-direction: column;
}

.main-content-area {
    flex-grow: 1; /* Ocupa todo el espacio restante */
    padding: 30px;
    overflow-y: auto; /* AÑADE SCROLL INTERNO: Clave para que el menú no se afecte */
}

/* --- Paneles y Formulario de Login --- */
#loginContainer {
    display: flex; /* Oculto por JS, pero así se debe ver */
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: rgba(0,0,0,0.8);
    position: fixed;
    inset: 0;
    z-index: 2000;
}

#loginForm {
    background-color: var(--white-color);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.2);
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.content-panel {
    display: none;
    background-color: var(--white-color);
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0,0,0,0.08);
}

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

/* --- Componentes del Sidebar --- */
.sidebar h2 {
    color: var(--white-color);
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 1px solid #4a6278;
    padding-bottom: 15px;
}

.sidebar .menu-button {
    display: block;
    width: 100%;
    padding: 15px;
    margin-bottom: 10px;
    background: none;
    border: none;
    color: #ecf0f1;
    text-align: left;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.sidebar .menu-button:hover:not(:disabled) {
    background-color: #34495e;
}

.sidebar .menu-button.active {
    background-color: var(--primary-color);
    font-weight: bold;
}

.sidebar .menu-button:disabled {
    color: #7f8c8d;
    cursor: not-allowed;
}

.sidebar .logout-button {
    margin-top: auto;
    background-color: var(--danger-color);
}

.sidebar .logout-button:hover {
    background-color: var(--danger-color-dark);
}

/* --- Elementos de Formularios --- */
.form-group {
    margin-bottom: 15px;
}

input, select {
    padding: 10px;
    border: 1px solid var(--gray-border);
    border-radius: 8px;
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 10px;
}

button {
    padding: 12px 18px;
    border: none;
    border-radius: 8px;
    background-color: var(--primary-color);
    color: var(--white-color);
    cursor: pointer;
    transition: all 0.3s;
    font-weight: bold;
}

button:hover:not(:disabled) {
    background-color: var(--primary-color-dark);
    transform: translateY(-1px);
}

button:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
}

/* --- Tabla --- */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    font-size: 0.9em;
}

th, td {
    padding: 12px 8px;
    text-align: left;
    border-bottom: 1px solid var(--gray-border);
    vertical-align: middle;
}

th {
    background-color: var(--dark-bg);
    color: var(--white-color);
}

tr:nth-child(even) {
    background-color: var(--gray-light);
}

.cargo { color: var(--cargo-color); text-align: right !important; }
.abono { color: var(--abono-color); text-align: right !important; }

/* --- Celdas de Acciones --- */
.actions-cell {
    width: 80px;
    text-align: right !important;
}
.action-btn { background: none; border: none; cursor: pointer; padding: 5px; box-shadow: none; font-size: 1.2em; }
.edit-btn { color: #f39c12; }
.delete-btn { color: var(--danger-color); }


/* --- Información del Propietario y Saldos --- */
#infoPropietarioContainer {
    margin-top: 20px;
    padding: 15px;
    background-color: #eaf5ff;
    border-left: 5px solid var(--primary-color);
    border-radius: 5px;
}

.summary-box {
    border-radius: 8px;
    text-align: center;
    margin-bottom: 20px;
    padding: 20px;
}
.summary-box h3 { margin-top: 0; }
.summary-box .amount { font-size: 2.2em; font-weight: bold; }

.saldo-positivo { background-color: var(--saldo-positivo-bg); color: var(--success-color); border: 1px solid var(--success-color); }
.saldo-negativo { background-color: var(--saldo-negativo-bg); color: var(--danger-color); border: 1px solid var(--danger-color); }
.saldo-cero { background-color: var(--saldo-cero-bg); color: #16a085; border: 1px solid #16a085; }

/* --- ESTILOS MEJORADOS PARA SALDOS POR TIPO --- */
.saldos-detalle-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 15px;
    margin-bottom: 25px;
    padding: 15px;
    background-color: var(--light-bg);
    border-radius: 8px;
    border: 1px solid var(--gray-border);
}

.saldo-tipo-item {
    flex-grow: 1;
    min-width: 160px;
    padding: 15px;
    border-radius: 8px;
    color: var(--white-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
    text-align: center;
    transition: transform 0.2s ease-in-out;
}

.saldo-tipo-item:hover {
    transform: translateY(-3px);
}

.saldo-tipo-item strong {
    display: block;
    font-size: 0.9em;
    text-transform: uppercase;
    margin-bottom: 8px;
    opacity: 0.9;
    letter-spacing: 0.5px;
}

.saldo-tipo-item span {
    font-size: 1.6em;
    font-weight: 700;
}

.saldo-tipo-item.saldo-negativo { background: linear-gradient(135deg, #e74c3c, #c0392b); }
.saldo-tipo-item.saldo-positivo { background: linear-gradient(135deg, #2ecc71, #27ae60); }
.saldo-tipo-item.saldo-cero { background: linear-gradient(135deg, #95a5a6, #7f8c8d); }


/* --- Notificaciones --- */
.notification {
    visibility: hidden;
    min-width: 250px;
    margin-left: -125px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 5px;
    padding: 16px;
    position: fixed;
    z-index: 3000;
    left: 50%;
    bottom: 30px;
    font-size: 17px;
}

.notification.show {
    visibility: visible;
    animation: fadein 0.5s, fadeout 0.5s 2.5s;
}

@keyframes fadein {
    from {bottom: 0; opacity: 0;}
    to {bottom: 30px; opacity: 1;}
}
@keyframes fadeout {
    from {bottom: 30px; opacity: 1;}
    to {bottom: 0; opacity: 0;}
}