* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: #f0f2f5;
    min-height: 100vh;
}

header {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 18px 20px;
}

header h1 {
    font-size: 1.4rem;
    font-weight: 600;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.menu-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

.menu-card {
    background: white;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    text-decoration: none;
    color: #2c3e50;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.menu-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.menu-icon {
    font-size: 3rem;
}

.menu-card span {
    font-size: 1.3rem;
    font-weight: 600;
}

/* ============ NAVEGACIÓN ============ */
.nav-menu {
    background: #34495e;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 16px 24px;
    font-size: 1rem;
    font-weight: 500;
    transition: background 0.3s ease, color 0.3s ease;
    border-bottom: 3px solid transparent;
}

.nav-menu a:hover {
    background: rgba(255,255,255,0.1);
}

.nav-menu a.active {
    background: #2c3e50;
    border-bottom: 3px solid #3498db;
}

.contenido {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

/* ============ FORMULARIO ============ */
.formulario-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.formulario-card h2 {
    margin-bottom: 20px;
    color: #2c3e50;
    font-size: 1.3rem;
}

.formulario-card form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    align-items: end;
}

.form-grupo {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-grupo label {
    font-weight: 600;
    color: #2c3e50;
    font-size: 0.9rem;
}

.form-grupo input,
.form-grupo select {
    padding: 10px 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-grupo input:focus,
.form-grupo select:focus {
    outline: none;
    border-color: #3498db;
}

.btn-guardar {
    background: #3498db;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.btn-guardar:hover {
    background: #2980b9;
}

.btn-guardar:disabled {
    background: #95a5a6;
    cursor: not-allowed;
}

/* ============ TOTAL ============ */
.total-card {
    background: white;
    border-radius: 12px;
    padding: 25px 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
}

.total-card h2 {
    color: #2c3e50;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.total-monto {
    font-size: 2.2rem;
    font-weight: 700;
}

.total-monto.positivo {
    color: #27ae60;
}

.total-monto.negativo {
    color: #e74c3c;
}

.total-detalle {
    color: #7f8c8d;
    font-size: 0.85rem;
    margin-top: 5px;
}

/* ============ TABLA ============ */
.tabla-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow-x: auto;
}

.tabla-card h2 {
    margin-bottom: 20px;
    color: #2c3e50;
    font-size: 1.3rem;
}

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

.tabla-card th {
    background: #2c3e50;
    color: white;
    padding: 12px 15px;
    text-align: left;
    font-size: 0.9rem;
}

.tabla-card td {
    padding: 12px 15px;
    border-bottom: 1px solid #ecf0f1;
    font-size: 0.95rem;
}

.tabla-card tr:hover td {
    background: #f8f9fa;
}

.sin-datos {
    text-align: center;
    color: #95a5a6;
    padding: 30px !important;
}

/* ============ BADGES ============ */
.badge-ingreso {
    background: #d5f5e3;
    color: #27ae60;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-salida {
    background: #fadbd8;
    color: #e74c3c;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.monto-ingreso {
    color: #27ae60;
    font-weight: 600;
}

.monto-salida {
    color: #e74c3c;
    font-weight: 600;
}

/* ============ IFRAME EMBEBIDO ============ */
.contenido-iframe {
    max-width: 1400px;
    margin: 20px auto;
    padding: 0 20px;
    height: calc(100vh - 140px);
}

.iframe-embebido {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    background: white;
}

/* ============ MENÚ DE OPCIONES (⋮) ============ */
.menu-opciones {
    position: relative;
    display: inline-block;
}

.btn-opciones {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px 10px;
    border-radius: 6px;
    color: #7f8c8d;
    transition: background 0.2s;
}

.btn-opciones:hover {
    background: #ecf0f1;
    color: #2c3e50;
}

.dropdown-opciones {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    min-width: 140px;
    z-index: 50;
    overflow: hidden;
}

.dropdown-opciones.abierto {
    display: block;
}

.dropdown-opciones button {
    display: block;
    width: 100%;
    text-align: left;
    padding: 10px 16px;
    background: none;
    border: none;
    font-size: 0.95rem;
    cursor: pointer;
    color: #2c3e50;
    transition: background 0.2s;
}

.dropdown-opciones button:hover {
    background: #f0f2f5;
}

.dropdown-opciones button.opcion-borrar {
    color: #e74c3c;
}

/* ============ MODAL ============ */
.modal-fondo {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 200;
    justify-content: center;
    align-items: center;
}

.modal-fondo.abierto {
    display: flex;
}

.modal {
    background: white;
    border-radius: 12px;
    padding: 25px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.25);
    animation: modalEntra 0.2s ease;
}

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

.modal h3 {
    margin-bottom: 15px;
    color: #2c3e50;
}

.modal .form-grupo {
    margin-bottom: 12px;
}

.modal-botones {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

.btn-cancelar {
    background: #ecf0f1;
    color: #2c3e50;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-cancelar:hover {
    background: #d5dbdb;
}

.btn-confirmar {
    background: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-confirmar:hover {
    background: #2980b9;
}

.btn-borrar-confirmar {
    background: #e74c3c;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-borrar-confirmar:hover {
    background: #c0392b;
}

.modal-texto-borrar {
    color: #555;
    margin-bottom: 5px;
}

/* ============ BOTÓN SYNC EN NAV ============ */
.btn-sync {
    background: none;
    border: 2px solid rgba(255,255,255,0.4);
    color: white;
    padding: 8px 16px;
    margin: 8px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-sync:hover {
    background: rgba(255,255,255,0.15);
    border-color: white;
}

.btn-sync:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-sync.sincronizando {
    animation: girar 1s linear infinite;
}

@keyframes girar {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}