:root {
    --color-ingreso: #1a9c5c;
    --color-salida: #d9432d;
    --color-primario: #2f5d8a;
    --color-fondo: #f4f6f8;
    --color-tarjeta: #ffffff;
    --color-texto: #24313f;
    --color-borde: #e1e6eb;
    --radio: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    background: var(--color-fondo);
    color: var(--color-texto);
}

.contenedor {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px 16px 60px;
}

header {
    text-align: center;
    margin-bottom: 24px;
}

header h1 {
    margin: 0 0 4px;
    font-size: 1.8rem;
}

.subtitulo {
    margin: 0;
    color: #667685;
    font-size: 0.95rem;
}

.estado-sync {
    margin: 8px 0 0;
    font-size: 0.78rem;
    color: #8a97a6;
}

/* Resumen */
.resumen {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 28px;
}

.tarjeta {
    background: var(--color-tarjeta);
    border-radius: var(--radio);
    padding: 16px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border-top: 4px solid transparent;
}

.tarjeta-ingreso { border-top-color: var(--color-ingreso); }
.tarjeta-salida { border-top-color: var(--color-salida); }
.tarjeta-balance { border-top-color: var(--color-primario); }

.tarjeta-label {
    display: block;
    font-size: 0.8rem;
    color: #667685;
    margin-bottom: 6px;
}

.tarjeta-monto {
    display: block;
    font-size: 1.4rem;
    font-weight: 700;
}

/* Formulario */
.formulario-seccion, .tabla-seccion {
    background: var(--color-tarjeta);
    border-radius: var(--radio);
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.formulario-seccion h2, .tabla-seccion h2 {
    margin-top: 0;
    font-size: 1.15rem;
}

.fila-form {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.campo {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 130px;
}

.campo-ancho { flex: 2; min-width: 200px; }

.campo label {
    font-size: 0.8rem;
    margin-bottom: 4px;
    color: #4d5c6c;
}

.campo input, .campo select {
    padding: 9px 10px;
    border: 1px solid var(--color-borde);
    border-radius: 6px;
    font-size: 0.95rem;
}

.campo input:focus, .campo select:focus {
    outline: none;
    border-color: var(--color-primario);
}

.btn-guardar {
    background: var(--color-primario);
    color: #fff;
    border: none;
    padding: 10px 22px;
    border-radius: 6px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-guardar:hover { background: #244a6e; }

.mensaje-form {
    margin: 10px 0 0;
    font-size: 0.85rem;
}

.mensaje-form.exito { color: var(--color-ingreso); }
.mensaje-form.error { color: var(--color-salida); }

/* Tabla */
.tabla-scroll { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

thead th {
    text-align: left;
    padding: 10px 8px;
    border-bottom: 2px solid var(--color-borde);
    color: #4d5c6c;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

tbody td {
    padding: 10px 8px;
    border-bottom: 1px solid var(--color-borde);
    vertical-align: middle;
}

.badge {
    padding: 3px 9px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #fff;
}

.badge-ingreso { background: var(--color-ingreso); }
.badge-salida { background: var(--color-salida); }

.monto-ingreso { color: var(--color-ingreso); font-weight: 600; }
.monto-salida { color: var(--color-salida); font-weight: 600; }

.btn-eliminar {
    background: none;
    border: 1px solid var(--color-borde);
    color: #8a97a6;
    border-radius: 6px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 0.8rem;
}

.btn-eliminar:hover {
    background: #fbe9e7;
    border-color: var(--color-salida);
    color: var(--color-salida);
}

.cargando {
    text-align: center;
    padding: 20px;
    color: #8a97a6;
}

@media (max-width: 560px) {
    .resumen { grid-template-columns: 1fr; }
    .tarjeta-monto { font-size: 1.2rem; }
}