.encabezado {
    background-color: #0f3d64;
}

/* Pestañas dentro del encabezado azul */
.pestanas .nav-link {
    color: rgba(255, 255, 255, .8);
    border: 0;
    border-radius: 0;
    padding: .9rem 1.4rem;
    font-weight: 500;
}

.pestanas .nav-link:hover {
    color: #fff;
}

.pestanas .nav-link.active {
    background-color: #fff;
    color: #0f3d64;
    font-weight: 600;
}

.resumen {
    background: #fff;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    padding: .35rem .8rem;
    color: #495057;
}

.form-label {
    font-weight: 600;
    font-size: .9rem;
    color: #344054;
}

.marco-foto {
    width: 100%;
    max-width: 220px;
    aspect-ratio: 1 / 1;
    border: 1px solid #dee2e6;
    border-radius: 10px;
    background: #f1f3f5;
    overflow: hidden;
}

.foto-grande {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.form-control:disabled,
.form-select:disabled {
    background-color: #f1f3f5;
    opacity: 1;
}

/* Lista lateral */
.lista-alumnos {
    max-height: 70vh;
    overflow-y: auto;
}

.lista-alumnos .list-group-item-action {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .6rem 1rem;
}

.lista-alumnos .list-group-item-action.active {
    background-color: #e8eef6;
    color: #0f3d64;
    border-color: #dee2e6;
}

.miniatura {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    object-fit: cover;
    border-radius: 50%;
    background: #f1f3f5;
}

.lista-alumnos .nombre {
    font-weight: 500;
    line-height: 1.2;
}

.lista-alumnos .detalle {
    font-size: .8rem;
    color: #6c757d;
}

.miniatura.iniciales {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #dbe5f1;
    color: #0f3d64;
    font-size: .8rem;
    font-weight: 600;
}